The pineal gland is not a spiritual “third eye."

1. Introduction, pastoral question, and method

1.1. A question that deserves a serious answer

Evangelical Christians encounter, via the Internet and popularization circuits, a chain of claims. The pineal gland would produce DMT. This DMT would explain dreams, visions, out-of-body experiences, and near-death experiences. The pineal would be connected to the optic system, therefore a "third eye" in the proper sense, not a mistake of creation. God might make use of this function. The same schema would be found in Hinduism and kundalini awakening. Jesus would speak of this eye in the singular when he says that the eye lights the whole body (Matthew 6:22-23; Luke 11:34-36). The believer's body, a new creation and temple of the Holy Spirit (1 Corinthians 6:19; 2 Corinthians 5:17), would be the biological locus of this operation.

This question deserves a serious answer, for three reasons that are not ridiculous.

First, it starts from a sound theological reflex. What God has created is not refuse (Genesis 1; Psalm 139). Seeking an organ's function is legitimate. Ridiculing the believer who asks why God made this gland misses the catechetical opportunity.

Second, it touches the discernment of visions and bodily manifestations, a live subject in charismatic milieus. When a preacher uses neuro vocabulary to authenticate a falling, a vision, or his authority, the biblical criterion can be short-circuited.

Third, it can drift toward syncretism (the Holy Spirit would be kundalini, which would be pineal DMT) or toward commercial spiritual science (supplements, "activation," refusal of care). These drifts do not justify treating the question as a superstition to crush. They require carefully separating what one knows, what one surmises, and what one believes.

1.2. Thesis

The thesis can be stated in one sentence. The human pineal has a real and well-described endocrine function (melatonin, biological time), informed by light via the retina and a synaptic chain, not by pineal vision. The idea that it would pour out psychedelic doses of DMT at birth, in dreaming, or near death is a popularized then strongly criticized hypothesis, not a fact. The eye of Matthew and Luke is a moral metaphor in the tradition of the good or evil eye, not a supernumerary organ. The Holy Spirit remains a divine person who dwells in the body without being reduced to it.

Working formula, to keep throughout the article. Resemblance of vocabulary (eye, light, vision) is neither anatomical identity nor identity of the Spirit.

1.3. Method and declared position

This study is a qualitative bibliographic synthesis. It does not rest on an original field enquiry, nor on an experiment. It triangulates (a) peer-reviewed review articles in neuroendocrinology, pharmacology, and the study of religions; (b) university monographs and commentaries; (c) a scriptural reading mobilized in the Protestant evangelical tradition for the exegesis of the eye and for the pneumatology of the temple.

The axiological position is declared rather than concealed. The author writes from Protestant evangelical Christianity. Scripture is cited to demonstrate or contradict. The discernment of visions and manifestations is not delegated to an improvised endocrinology. This position does not authorize inventing biological facts, nor ridiculing the believer's scientific curiosity.

Four registers guide the writing. They must never be fused in a single affirmative sentence.

Absolute out of scope. No medical advice. No dosing. No how-to for a substance, forced breathing, or "decalcification." DMT is a controlled substance in many jurisdictions. The clinical trials cited describe supervised administrations. They do not legitimize a spiritual use.

1.4. Plan

The plan is as follows. Section 2. pineal anatomy and physiology. Section 3. endogenous DMT and the state of the science, with Strassman on three distinct planes. Section 4. history of ideas of the "third eye," without conflation. Section 5. kundalini as an autonomous academic frame. Section 6. exegesis of Matthew 6:22-23 and Luke 11:34-36. Section 7. Protestant pneumatology. Section 8. evangelical vigilance. Section 9. discussion and conclusion. The sources close the article.

1.5. Audience and ethics of reading

If you are a pastor, a theology student, a believer confronted with a video on the third eye, or a person wounded by a discourse of "spiritual science," this article does not ask you to deny curiosity about the created body. It asks you to keep the registers separate. Read slowly. Check the references. Keep the formula. Resemblance of vocabulary is neither anatomical identity nor identity of the Spirit. The aim is not to win a culture war against Hinduism or against psychedelic research. The aim is to protect evangelical discernment and the dignity of creation, without syncretism and without mockery.

---

2. Pineal anatomy and physiology melatonin, light, optic connection

2.1. A neuroendocrine organ, not an eye in the human

The pineal (epiphysis) is a small unpaired organ of the diencephalon. Its principal circulating product is melatonin (N-acetyl-5-methoxytryptamine), synthesized from tryptophan via serotonin. Secretion is nocturnal. David E. Nichols recalls the often-cited order of magnitude. Adult gland of less than 0.2 g. Production of about 30 µg of melatonin per day. A hormone acting at very high affinity on its receptors, not as a mass hallucinogen (Nichols, 2018).

In non-mammalian vertebrates, the pineal is often photosensitive and may carry an autonomous clock. In mammals, including the human, the gland has lost direct photosensitivity. It responds to light by a polysynaptic pathway that passes through melanopsin-expressing retinal ganglion cells. Pineal circadian oscillations extinguish within a few days without input from the pacemaker of the suprachiasmatic nuclei (SCN). The duration of the nocturnal melatonin episode codes night length in photoperiodic species. In the human, a soporific effect of exogenous melatonin is described when it is given by day or early in the evening. The causal link with certain insomnia of the elderly remains non-conclusive in the review by Macchi and Bruce (2004). Abnormal profiles are reported in psychiatric and neurological disorders, without their significance being clear (Macchi and Bruce, 2004).

The molecular frame is stable. Nocturnal noradrenaline, cAMP, arylalkylamine N-acetyltransferase (AANAT), the rate-limiting enzyme (Borjigin, Li, and Snyder, 1999). Nocturnal production is entrained by the SCN clock, which controls noradrenaline release by pineal sympathetic afferents. Other transmitters modulate this message. They do not replace it (Simonneaux and Ribelayga, 2003). The clinical chapter by Arendt and Aulinas (Endotext, NCBI Bookshelf) offers a useful endocrine state of the art as an instrument, not as a primary article.

What one may say of creation, without speculation. The pineal is a neuroendocrine transducer of time. Sleep, wake-sleep rhythm, night signal, and in other mammals reproductive seasonality. That already answers the scruple "why would this gland exist?" without inventing a visionary function. God did not create a useless gland. He gave the body a night signal. Psalm 127:2 already recalls that God gives sleep to those he loves. Mark 4:38 shows Jesus asleep in the boat. Biological rhythm is not a concession made to the fall. It belongs to the Creator's wisdom.

2.2. There is a connection with light, and it is not a pineal optic nerve

The popular formula "the pineal is plugged into the optic system, therefore it is an eye" mixes a real circuit and a false conclusion. The real circuit deserves to be described with precision, for that is often where the rhetorical slide begins.

Mammalian circuit, consensus of the reviews cited. First, light is detected in the retina, including by a subpopulation of intrinsically photosensitive retinal ganglion cells (ipRGC) expressing melanopsin. These cells project to the SCN (retinohypothalamic tract). They set the clock. They do not form a pineal image (Berson, Dunn, and Takao, 2002). Second, the SCN, then the paraventricular nucleus, then the intermediolateral column of the cord, then the superior cervical ganglion, then the sympathetic conarian nerves, then the pinealocytes. Third, nocturnal noradrenaline activates melatonin synthesis. Light, via this circuit, inhibits that release. Beta-adrenergic antagonists abolish or strongly reduce the rhythm.

What is false, or at least unsupported for the adult human. A direct retina-pineal optic nerve that would make one see. A functional photoreceptive pineal, actually homologous to the lizard's parietal eye. A physiological spiritual vision lodged in the gland.

Horst-Werner Korf synthesizes the phylogenetic transformation. In mammals, the pinealocyte is of neuroendocrine type, without an outer photoreceptor segment and without direct photosensitivity. Noradrenergic innervation is dense (Korf, 2024). This review serves for the evolution of the pineal complex. It does not serve for DMT. Bertolucci and Foà (2004) recall that non-mammals have extraocular photoreceptors, whereas mammals depend on the lateral eyes for circadian entrainment and photoperiodic responses. Evolutionary homology is not functional identity. Saying "therefore the human still has a third eye, merely internalized" is a rhetorical slide, not a result.

2.3. Calcifications, so-called "pineal sand"

Calcareous concretions (corpora arenacea) are frequent with age and serve as a radiological landmark. No physiology review cited here makes of them a closing of the third eye, nor a reason for decalcification by supplements, fluoride, or fasting. That discourse belongs to pastoral vigilance (section 8), not to endocrinology. The fluoride theory has no basis in the sources retained for this article. Devoting a long refutation to it would give it a stage it does not have. The Protestant reader may simply retain. Frequent pineal calcification. Not an argument for commercial "activation." Not medical advice.

2.4. Separation table

The fourth line of the table deserves a pastoral comment. The leap is not only scientific. It is theological. Even if a gland contributed to certain states of consciousness (which is not established for visionary DMT), that would not yet decide the status of a vision before God. Scripture discerns visions by Christ, fidelity to the covenant, fruit, and the edification of the Church (Deuteronomy 13; 1 John 4:1-3; 1 Corinthians 14; Galatians 5:22-23). It does not discern them by a glandular marker.

---

3. Endogenous DMT state of the science

3.1. Do not confuse three questions

Jiménez and Bouso (2022) offer the right frame. The debate on the significance of mammalian DMT has lasted since the 1960s and is not settled on the physiological role. Their review must not be read as a validation of the pineal myth.

Three distinct questions.

1. Does DMT given from outside (injection, inhalation, or ayahuasca with a monoamine oxidase inhibitor) produce intense visions? Yes, clinical data.
2. Does endogenous DMT exist in mammals, possibly in the brain? Traces yes in the rat. In the human, biological fluids have historically been reported. The living brain has not been quantified.
3. Does the human pineal release enough of it to explain dreams, visions, or near-death experiences? Not demonstrated. Arguments of mass, metabolism, and animal experience go against.

Confusing these three questions is the first trap of popularization. An affirmative answer to question 1 entails no affirmative answer to questions 2 and 3. A partial affirmative answer to question 2 (traces) entails no affirmative answer to question 3 (pineal visionary doses).

3.2. Strassman on three distinct planes

This section is the bibliographic knot of the article on DMT. It explicitly separates three planes. These three planes do not lend themselves to a single affirmative sentence.

(a) What Strassman measured in supervised intravenous administration

Rick J. Strassman, a psychiatrist at the University of New Mexico School of Medicine, obtained in the 1990s United States federal authorization to administer DMT to human volunteers, after a long period without controlled hallucinogen trials in the United States. The regulatory path is described in Strassman (1991).

The principal clinical results are published in 1994 and 1996.

First article. Strassman, Qualls, Uhlenhuth, and Kellner (1994, I). Eleven experienced volunteers. Double-blind design, saline placebo, intravenous doses of DMT fumarate at 0.05, 0.1, 0.2, and 0.4 mg/kg. Blood peak and subjective effects in less than two minutes. Negligible effects at thirty minutes. Dose-dependent elevation of blood pressure, heart rate, pupil diameter, and rectal temperature. Rise in beta-endorphin, ACTH, cortisol, and prolactin. Growth hormone elevated at all doses. Circulating melatonin unaffected. Clear hallucinogenic threshold from 0.2 mg/kg.

Second article. Strassman, Qualls, Uhlenhuth, and Kellner (1994, II). Brief and intense subjective effects (colored visions, rush, relative loss of control), parallel to the plasma peak. Introduction of the Hallucinogen Rating Scale. The 0.2 and 0.4 mg/kg doses produce clearly hallucinatory effects. The 0.05 and 0.1 mg/kg doses remain largely below threshold.

Third article. Strassman, Qualls, and Berg (1996). Thirteen volunteers. 0.3 mg/kg intravenously or placebo, four times at thirty-minute intervals, on two distinct days, double-blind. No tolerance to the so-called psychedelic subjective effects (clinical interview and scale). By contrast, progressive diminution of ACTH, prolactin, cortisol, and heart-rate responses. Blood pressure unchanged. Authors' conclusion. Differential regulation of subjective and biological processes. A particular property of DMT relative to other hallucinogens.

Nichols (2016) situates these data in the pharmacology of serotonergic psychedelics. This is not a how-to. Cameron and Olson (2018) offer a complementary chemical and pharmacological review.

What these trials do not show. An endogenous pineal secretion. A near-death experience mechanism. A cause of dreams. Proof that the body spontaneously manufactures the same state. These are peripheral administrations of pharmacological doses, in selected volunteers, in a regulated hospital frame. Barker (2018a) says it himself. One must separate the possible natural role of an endogenous compound and the effects of a peripheral administration. The absence of elevation of circulating melatonin in Strassman 1994 I deserves to be underlined. It already goes against a trivial fusion between injected DMT and the pineal melatonin axis.

(b) What Strassman hypothesizes in the book

Strassman (2001), DMT: The Spirit Molecule, Park Street Press, is a general-audience monograph by the author of the trials, not a peer-reviewed article. The book narrates the regulatory path, the clinical sessions, and, above all, proposes hypotheses that go beyond the published measurements.

Central hypotheses of the book, to be reported as such, without transforming them into facts. DMT would be a "spirit molecule," capable of mediation between matter and consciousness. The pineal might synthesize DMT (theoretical presence of enzymes, proximity of tryptophan and serotonin). Pineal releases of DMT might accompany birth, dreaming, death, certain meditative states, even accounts of "abduction" interpreted otherwise. Phenomenological resemblances between the intravenous sessions and near-death experience or mystical experience accounts are underlined.

These hypotheses are not results of the 1994-1996 articles. The trials measure effects of an injected substance. The book then extrapolates toward a biology of consciousness, death, and the sacred. Graham St John documents this popularization as a media complex (book, documentaries, psychedelic culture), not as an endocrine discovery (St John, 2016). For the Protestant reader, the methodological point is simple. A general-audience book can be interesting as a document in the history of ideas. It does not replace a peer-reviewed review. It cannot be cited as if its hypotheses were the conclusions of the clinical trials.

(c) What the peer-reviewed literature confirms, nuances, or refutes

Synthesis formula for this knot. Strassman showed what injected DMT does. He proposed that the pineal might release it at life's limit moments. Peer-reviewed science retains the administration measurements and does not validate the visionary pineal hypothesis.

3.3. Human endogenous DMT critical review

Barker, McIlhenny, and Strassman (2012) sift reports of endogenous psychedelics in the human from 1955 to 2010. Work since Franzen and Gross (Nature, 1965) reports DMT, bufotenine, or 5-methoxy-DMT in human blood, urine, or cerebrospinal fluid. Many older studies are analytically fragile. The presence of traces does not equal a psychedelic brain concentration, nor a pineal origin. No published quantification, at the date of the reviews cited here, of DMT in the living human brain. This lacuna is decisive. Any sentence "in man, the pineal secretes" is an extrapolation, not a result.

3.4. Rat cortical DMT yes, pineal as principal source no

The experimental sequence must be respected, for popularization often cites "a study on rats" while omitting the pinealectomies and the nanomoles.

Barker, Borjigin, Lomnicka, and Strassman (2013) detect DMT in dialysates in the free-moving rat. Decisive limit, written afterward by the same teams. No reliable quantification. Point sampling. The probe traversed both visual cortex and pineal. One cannot attribute the signal to the gland alone.

Dean et al. (2019) bring the central quantified results. Cortical dialysate, rats, high-performance liquid chromatography with fluorescence, without monoamine oxidase inhibitor. Intact pineal, baseline. 0.05 to 1.8 nM, mean 0.56 nM (n = 25). After experimental cardiac arrest. Mean 1.35 nM, maximum 5.01 nM. Significant rise (p = 0.00027). Pinealectomy, baseline. 0.25 to 2.2 nM, mean 1.02 nM (n = 11). After arrest. Mean 1.83 nM, maximum 5.11 nM. No significant difference linked to the presence of the pineal, neither at baseline (p = 0.05, threshold not crossed in their test) nor after arrest (p = 0.34). Local comparison with extracellular serotonin of the same dialysate, rats without pineal. 5-HT mean about 2.1 nM. The authors say "comparable to monoamines measured by microdialysis," not "comparable to an injected psychedelic dose." INMT messenger RNA detected by in situ hybridization in cortex, pineal, and choroid plexus of the rat and of human autopsy tissues. INMT and AADC colocalization shown in the rat.

Paradox assumed by the authors. The pineal coexpresses the transcripts, but contributes little to measured brain DMT, because tryptophan there is oriented toward the serotonin then melatonin pathway. The affinity of tryptophan hydroxylase for tryptophan is much stronger than that of the decarboxylase. Phrase to retain rather than paraphrase freely. It is unknown whether the concentrations measured at cardiac arrest can produce the effects of an exogenous psychedelic dose, and unknown whether such a rise exists in the human. The authors add that other neuromediators may participate in near-death states of consciousness in the animal.

Source trap not to copy. Chaves et al. (2024), a review useful otherwise, write that Dean et al. (2019) would have found in the pineal rates comparable to neuromediators. That is not what Dean et al. conclude. Dean et al. measure cortical dialysate, show independence from the pineal, and explain why the gland is a poor candidate despite its transcripts. This formulation of Chaves is not taken up here.

Glynos et al. (2023) bring a laboratory fact often ignored by videos. In the rat, recombinant INMT does not methylate tryptamine into N-methyltryptamine or into DMT in their assays. Knock-out of INMT does not abolish a tryptamine methylation activity in brain and lung. The products obtained are neither N-methyltryptamine nor DMT. By contrast, human INMT and rabbit INMT, recombinant, can produce these compounds in vitro. Authors' conclusion. Probable alternative pathway in the rat. The classical enzyme does not tell the whole story, and it is not superposable from one species to another. Forbidden to conclude. "Therefore the human cannot make DMT" (human INMT is active in vitro). Or "therefore the human pineal makes visionary doses of it" (no human in vivo measurement).

3.5. Nichols's critique and Barker's reply

Central arguments of Nichols (2018), to be reported as pharmacological critique, not as mockery. Very small gland. Principal product. Melatonin at the microgram scale. DMT is rapidly degraded by monoamine oxidases. The brain concentrations described are very low relative to the doses that, when administered, are psychoactive (Strassman 1994. tenths of mg/kg). The romantic history (Egypt, seat of the soul, third eye, secretion at birth, in dreaming, and at death) is not coherent with the data. Stress and proximity of death can alter consciousness without passing by DMT (other neuromediators, hypoxia, etc.).

Obligatory nuance. Nichols targets the psychedelic, pineal, near-death experience and dream thesis. He does not deny that traces have been measured. An exchange of letters follows. Barker (2018b). Nichols's reply, same volume. The specialists' debate concerns the interpretation of traces and what remains to be measured, not a consensus according to which the pineal would be the third eye.

Chaves et al. (2024) cite Nichols and Dean together. Usable points, once the correction on Dean is made. Exogenous DMT has a broad profile (5-HT2A receptor, but also sigma-1, TAAR, transporters). Endogenous production has been discussed for decades. Nichols judges the concentrations too low for a psychoactive effect and criticizes the pineal / near-death experience link. Presence in the human brain and exact physiological roles remain to be established. The so-called therapeutic literature concerns administrations studied in research, not a gland to activate.

Other pieces. Fontanilla et al. (2009). Binding to the sigma-1 receptor. That opens a hypothesis of a cellular role (chaperone, cellular stress). It is not proof of spontaneous visions. Barker (2022). The very title separates research administration and study of the endogenous. Keeping that separation is an editorial discipline as much as a scientific one.

3.6. Dreams

No category A source retained here demonstrates that pineal DMT generates dreams. Barker (2018a) notes that there is no circadian study of pineal DMT release. Dreaming (REM sleep, pontine and cortical activation) is another field. Do not fill the void with the hypotheses of Strassman's book (2001). Status. Popular hypothesis, not established, currently without a credible mechanism at the doses measured. For the pastor, that means it is not necessary to invoke a pineal molecule to speak biblically of sleep, dreams, and discernment. Scripture already knows dreams (Genesis 37; Matthew 1-2; Acts 2:17) and frames them without endocrinology.

3.7. Near-death experiences

Two solid results, and a third that does not link them.

Timmermann et al. (2018). In volunteers receiving exogenous DMT, scores on Greyson's near-death experience scale approach those of persons reporting such an experience. That is a phenomenological analogy under administered substance. It is not a dosing of endogenous DMT in survivors of cardiac arrest.

Dean et al. (2019). Nanomolar rise in the rat in cardiac arrest, with or without pineal, psychoactive significance unknown, human extrapolation not made by the authors.

Borjigin et al. (2013). Surplus of EEG coherence in the rat approaching death. Neurophysiological observation. Not an identification with DMT nor with human near-death experience accounts. Nichols uses it, with other leads (stress, hypoxia, other transmitters), as alternative explanations that dispense with invoking a pineal outpouring.

Prudent formula. An overlap of subjective experience between injected DMT and certain near-death experiences is published. A mechanism "the pineal empties its DMT and produces the near-death experience" is not. The pinealectomy data in the rat render it little plausible as a principal explanation. Theologically, even a phenomenological analogy does not authorize reducing the hope of the resurrection (1 Corinthians 15; Romans 8:11) to a secretion.

3.8. Global status table

The last line of the table is theological as much as logical. Even if an endogenous molecule one day modulated certain contents of consciousness, that would not decide the status of a vision before God. Scripture does not locate the work of the Spirit in a gland.

---

4. "Third eye" history of ideas, without conflation

Four objects sometimes bear the same nickname. Distinguishing them is the heart of this section. The working formula applies here with particular force. Resemblance of vocabulary is neither anatomical identity nor identity of the Spirit.

4.1. Zoological object parietal eye and pineal complex of non-mammals

In many lizards and in the tuatara, the complex comprises a pineal and an extracranial parietal eye, with cornea, lens, and retina, photosensitive. Both synthesize melatonin. Roles discussed. Thermoregulation, rhythms, reproduction (Tosini, 1997). Non-mammals have extraocular photoreceptors (deep brain, pineal complex. pineal, parapineal organ, frontal organ, parietal eye). Mammals, for circadian entrainment and photoperiodic responses, depend on the lateral eyes (Bertolucci and Foà, 2004). Korf (2024) recalls that the lineage ends, in birds and mammals, in an intracranial pineal. The true photoreceptor is lost in the mammal.

Biologists sometimes say "third eye" for this parietal eye. That usage is technical. It does not describe a chakra, nor a human visionary faculty, nor the eye of Matthew 6. Evolutionary homology (the mammalian pineal and the parietal eye derive from the roof of the diencephalon) is not functional identity. Saying "therefore the human still has a third eye, merely internalized" is a rhetorical slide, not a result. For the catechist, the lesson is simple. Comparative zoology explains why certain reptiles have a median photoreceptor. It does not authorize baptizing the human pineal as an organ of spiritual vision.

4.2. Philosophical object Descartes, seat of the soul, not an eye

René Descartes, in L'Homme and The Passions of the Soul, places in the pineal the principal locus where the soul exercises its functions, in part because the organ is unpaired and median, unlike double cerebral structures. This is not a theory of the Hindu third eye, nor of DMT. Lokhorst (Stanford Encyclopedia of Philosophy) offers a stable entry. Shoja et al. (2016) trace the trajectory from ancient and modern speculation to the neuroendocrine organ, with the isolation of melatonin in 1958 (Lerner). Nichols evokes a romantic history that assimilates the pineal to the eye of Horus. That assimilation has not been verified here in an Egyptology source. It is not repeated as a pharaonic fact. It is noted as a motif of the vulgate, possibly legendary. Descartes interests the history of philosophy. He is not an authority in endocrinology, nor in the exegesis of Matthew 6.

4.3. Indian object ajna, not the pineal of anatomy

In tantric and hatha yoga mappings, ajna cakra ("command") is situated between the eyebrows, linked to the mental, to mantra, and to the guru's authority. It is a locus of practice and cosmology, not the result of a dissection. The equation ajna = pineal gland is a modern gesture, typical of Western esoteric reception then of global yoga.

Samuel (2008) historicizes yogas and tantras. Subtle bodies are situated textual and ritual constructions, not a universal physiology that neuroscience would have rediscovered. Samuel is not cited as if he commented on DMT. Respecting that limit is a matter of intellectual honesty as much as of interreligious politeness. One can describe an Indian tradition without reducing it to a gland, and without identifying it with the Holy Spirit.

Theosophy (Blavatsky and her successors) reinterprets the pineal as an atrophied spiritual eye, often crossed with the eye of Shiva. This layer is Western and modern. St John (2016) takes over in the twentieth and twenty-first centuries. From occultism to Strassman's book, then to popular culture. Category. Cultural analogy and history of ideas, not classical Hindu data nor biological data. A paginated citation of the Satcakranirupana or of The Secret Doctrine has not been established for this article. No verse and no page is invented.

4.4. Non-conflation sentence

The lizard's parietal eye is a real photoreceptor. The human pineal is a melatonin gland, indirectly regulated by the retina. Ajna is a locus of the subtle body in certain Indian traditions. Descartes's pineal is a hypothetical point of contact between soul and body. The "third eye" of the videos is a theosophical and psychedelic composite. None of these five objects is the eye of Matthew 6. The biblical object belongs to exegesis. Placing it in the anatomical list would already be the conflation. For the evangelical reader, this non-conflation sentence is the pastoral heart of the section. It allows one to speak respectfully of Indian traditions, of zoology, and of Descartes, without fusing their vocabularies with the Gospel.

---

5. Kundalini autonomous academic frame

5.1. Proper stake

The contribution of this section is the alleged link kundalini, ajna, pineal, DMT, Holy Spirit. This link is a stack of analogies, not a published causal chain. One can compare bodily repertoires (trembling, heat, visions) without concluding to a common molecule or to an identity with the Spirit. Formula. Resemblance of the body is not identity of the Spirit. Neither pathologize everything, nor romanticize. Do not identify with the Spirit or with DMT.

5.2. Phenomenology in a precise tradition

Maxwell and Katyal (2022) enquire among meditators of Ananda Marga (reported sample. 80). They describe sensory, motor, and affective lived experiences labeled kundalini in that frame. Use. To show that kundalini vocabulary organizes bodily experiences inside a tradition. Non-use. Proof of a measurable energy, of an identity with the Holy Spirit, or of a DMT secretion. Non-clinical sample, single tradition. The pastoral interest is limited but real. It shows that the same bodily repertoire can be framed by a cosmology, a community, and an expectation, without that yet deciding the theological status of the experience.

5.3. Clinical neither pathologize everything, nor romanticize everything

Suchandra et al. (2021) present a case series and a brief review. Lived experiences of kundalini type can present as, or accompany, severe psychopathology. Clinical stake. Not to miss a psychosis, an epilepsy, a mood disorder, and not to crush every religious interpretation. The authors underline the risk of advanced practices without a frame.

Pastoral. If distress, loss of contact with reality, severe insomnia, ideas of harming, do not explain the episode by "your third eye is opening." Orient toward a physician. This article poses no diagnosis. It also refuses the inverse. Explaining every intense prayer as a pathology.

Lindahl et al. (2017) offer a broad taxonomy (59 experiences, 7 domains. cognitive, perceptual, affective, somatic, conative, sense of self, social) among Western Buddhist meditators. Valence, from reported growth to serious distress, depends on context, not on the mere fact that an experience is spiritual. Comparative use. Unusual contemplative states are neither proof of a unique pathology nor proof of a liberation. Article not specific to kundalini. Do not make it speak of revival churches.

Greyson (1993) introduces the "physio-kundalini syndrome" and its symptomatic overlap with certain near-death experiences. The construct is descriptive and debated. It is not an entity of the American diagnostic manual. Do not harden it into a diagnosis.

Woollacott, Kason, and Park (2021) and Corneille and Luke (2021) describe phenomenologies of reported spontaneous awakenings. Prudent use. Description, not pineal mechanism.

5.4. What kundalini does not explain here

No category A source cited shows that the rising of kundalini is a release of pineal DMT. That ajna is the epiphysis. That kriyas and charismatic manifestations share a common molecule.

One can compare behaviors and socio-ritual frames (induction, expectation, touch, contagion, after-the-fact narration). One cannot conclude "it is the same energy" nor, inversely, "therefore it is never the Spirit." Discernment remains theological and pastoral, not endocrine. For the charismatic Protestant, that means the presence of trembling or heat neither proves nor refutes by itself the work of the Spirit. For the more cessationist or reserved Protestant, that also means one can refuse a syncretistic amalgamation without having to psychiatrize every manifestation. The criteria remain those of Scripture. Christology (1 John 4:1-3). Fruit (Galatians 5:22-23). Edification and order (1 Corinthians 14). Examination (1 Thessalonians 5:19-21).

---

6. Exegesis of Matthew 6:22-23 and Luke 11:34-36

6.1. Text

Matthew 6:22-23, sense. The lamp of the body is the eye. If then your eye is haplous, your whole body will be luminous. But if your eye is poneros, your whole body will be dark. If then the light that is in you is darkness, how great the darkness.

Luke 11:34-36 takes up the same image and adds the exhortation to watch that the inner light not be darkness.

Decisive Greek. Ho ophthalmos. Singular. In Greek, the organ or the faculty is often said in the singular ("your eye," "your hand," "your foot"). Matthew 5:29 also speaks of "your right eye" in the singular, in an entirely different sense (occasion of stumbling). The singular does not introduce a third organ between the two eyes. Haplous. Simple, without fold, whole, sound. In the Jewish moral field. Generous, without double aim. The word returns in the New Testament only here and in Luke 11:34. Poneros. Evil. The evil eye is an idiom of avarice, envy, of the look that refuses to give. Internal landmarks. Deuteronomy 15:9 (the eye that shows itself evil toward the poor brother). Proverbs 22:9 (the good eye shares its bread). Proverbs 23:6; 28:22. Sirach 14:8-10. Tobit 4:7-11. Matthew 20:15 ("is your eye evil because I am good?", parable of the workers of the eleventh hour).

6.2. Rhetorical context

The logion is tightly set between the treasure (Matthew 6:19-21) and the alternative God or Mammon (Matthew 6:24), before anxiety for subsistence (6:25-34). To read these verses as a lesson in occult anatomy is to extract them from the argument on money, the heart, and undivided loyalty. The Sermon on the Mount speaks here of simplicity of economic and spiritual gaze, not of a gland. Extracting the logion from this context to graft it onto the pineal is not exegesis. It is a projection.

6.3. Exegetical sources

Allison (1987) is the reference article. He situates the logion in ancient theories of vision, so-called extramission. The eye emits light or fire (Plato, Timaeus 45b-46a; Philo; Testament of Job 18:4) and in the tradition of the good or evil eye. The lamp is not a modern window through which light enters. It is not a third eye either.

Elliott (1994) reads the evil eye as a pervasive Mediterranean belief, linked to envy and refusal to share. Socio-historical reading of the Sermon, not anatomical.

Viljoen (2009) offers an open-access synthesis. The genitive "lamp of the body" is understood, for an ancient hearer, with extramission. Haplous slides from the physiological register (sound eye) to the ethical register (integrity, generosity). Poneros aims at avarice, envy, refusal to give (Deuteronomy 15:7-11). The logion provokes examination of the inner light.

Whitters (2006) treats the logion in the Sermon. He does not dialogue with DMT. He is not made to speak of a subject he does not treat.

Major commentaries (Betz; Davies and Allison; Luz) converge. Haplous and poneros signify at once sound against sick, and sincere or generous against evil or avaricious.

6.4. Why the "third eye" reading fails

First, lexicon. No technical term of gland, forehead, or median organ. Ophthalmos is the ordinary eye.

Second, number. The singular is idiomatic, as for the hand or the foot in the same sermon (Matthew 5:29-30; 6:3).

Third, context. Treasure, Mammon, anxiety. An anatomical reading does not account for the neighboring verses.

Fourth, Jewish intertext. The good or evil eye is already moral in the Septuagint and the wisdoms. Jesus takes up an idiom. He does not inaugurate an endocrinology.

Fifth, history of ancient reception. The Fathers read simplicity of gaze toward God and against greed, a moral and spiritual register. They do not describe the pineal. A systematic patristic study has not been collated on critical editions for this article. No precise Chrysostom citation is invented.

Sixth, double anachronism. Reading the eye as a window (intromission theory, generalized only in the modern period) or as the ajna chakra (yogic map absent from the text) likewise misses the first-century hearer.

Seventh, the ancient theory of extramission explains why Jesus can say that the eye is a lamp. It is not an anticipation of melanopsin nor of DMT. The Ancients were wrong about physiological optics. Jesus employs their image for a moral teaching that, for its part, does not depend on the correctness of that optics. The Protestant writer can say it with pedagogy. The ancient image serves an ethical truth. It does not serve as a cryptic prophecy about endocrinology.

6.5. What a Protestant can still keep

The image remains strong for spiritual life. A divided gaze, two masters, darkens the whole person. A single, generous gaze, fixed on the Father, lights practice. That is an ethics of the heart and of money, fully evangelical, without a gland. The "light that is in you" (Matthew 6:23) is not identified by the text with a molecule. In John, the light is first Christ and revelation, not a secretion. Do not fuse the corpora without saying so. Matthew 6 calls to undivided loyalty. John 1 and 8 call to believe in the One who is the light. The two meet in the person of Christ, not in an epiphysis.

---

7. Protestant pneumatology Spirit, temple, visions, without reduction

7.1. The body is not a problem to circumvent

A classical Protestant theology refuses two symmetrical errors.

Dualism. The body would be a prison, true life would be an exit by the top of the skull or by a gland. That contradicts creation declared good, the incarnation, the resurrection of the body (1 Corinthians 15), the offering of bodies (Romans 12:1), and the fact that sexual immorality is grave because the body counts (1 Corinthians 6:12-20). A Christianity that would flee the body by a pineal "activation" would be no more biblical than a Christianity that would despise the body in the name of a vague spiritualism.

Reductionism. The Holy Spirit would be another name for melatonin, DMT, kundalini, or an EEG tracing. The texts speak of a person. Paraclete, sent by the Father in the Son's name (John 14:16-17, 26; 15:26; 16:7-15). Spirit of Christ (Romans 8:9). Who cries "Abba" (Romans 8:15; Galatians 4:6). Whom one can grieve (Ephesians 4:30). Whose fruits are moral (Galatians 5:22-23). Whose gifts are distributed as he wills (1 Corinthians 12:11). A molecule does not forgive, does not lead into the truth, does not confess "Jesus is Lord" (1 Corinthians 12:3).

Hold both. God acts with the created body (word pronounced by a larynx, bread, tears, sleep, community) without the created means being the Spirit. The doctrine of providence allows one to say "God can make use of a bodily function" in principle. It does not allow baptizing a non-established function, nor identifying the giver and the means. The bread of the Lord's Supper truly nourishes. It is not Christ in the sense that Christ would be gluten. Likewise, if one day a molecule modulated certain contents of consciousness, it would not thereby be the Holy Spirit.

7.2. Temple and new creation categories of covenant, not a glandular improvement

Texts. 1 Corinthians 3:16-17. "You" (plural) are the temple, the Spirit dwells among you. Ecclesial register. 1 Corinthians 6:19-20. Your body is the temple of the Holy Spirit who is in you, and who comes from God. You do not belong to yourselves, you were bought with a price. Therefore glorify God in your body. Context. Sexuality, misunderstood freedom, belonging. The body is a place of holiness because it is redeemed, not because a gland would be activated. 2 Corinthians 5:17 and Galatians 6:15. New creation (kaine ktisis). Status in Christ, passage from the old world to the new, not an endocrine mutation. The new creation is not measured in nanograms of DMT. Romans 8:11. The Spirit who raised Jesus will also give life to your mortal bodies. Horizon. Resurrection, not lucid dreaming nor provoked near-death experience.

Gupta (2010) discusses the temple in 1 Corinthians 6:19 (individual and/or community). Thesis generally retained in the secondary literature. Paul does not force a choice between personal body and ecclesial body. Individual sexual ethics and belonging to the body of Christ hold together.

Fee (God's Empowering Presence, 1994; NICNT commentary on 1 Corinthians) and Thiselton (NIGTC) carry the pneumatology and ethics of the body. They do not discuss DMT. Do not lend them that debate.

Consequence. "Temple of the Holy Spirit" sacralizes the concrete person, against impurity, exploitation, and contempt of the body. It does not designate the pineal as an anatomical holy of holies. Making the epiphysis the locus of anointing is a spatial displacement that the text does not make. The Spirit is "in you," not "in such-and-such a gland." The Pauline temple is a category of covenant and holiness. It is not a map of chakras baptized.

7.3. Visions and prophecy possible, regulated, non-technical

The New Testament knows visions and dreams (Acts 2:17, citing Joel; dreams of Matthew 1-2; Peter's vision, Acts 10; Paul, 2 Corinthians 12:1-10). It frames them.

1 Corinthians 12-14. The charisms are plural, for common usefulness, subject to order, intelligibility, mutual control (14:29). None is the privilege of a secret bodily technique. 1 Thessalonians 5:19-21. Do not quench the Spirit, do not despise prophecies, test everything, hold fast what is good. 1 John 4:1-3. Test the spirits. Christological criterion. Deuteronomy 13 and 18, Old Testament background. A sign or a dream does not legitimize a message that turns away from the covenant. Galatians 5:22-23. Moral fruit prevails over the phenomenon. 2 Corinthians 12. Paul does not found his apostleship on the visionary exploit. He speaks of a thorn and of power in weakness.

A charismatic Protestant and a cessationist Protestant may diverge on the question "do visions continue?" They can agree on what this article establishes. Scripture does not locate the work of the Spirit in the pineal, does not mention DMT, and does not read Matthew 6:22 as a third eye. Reducing the internal evangelical disagreement to this debate would be an editorial error. The target is the syncretistic amalgamation, not the ordinary belief that the Spirit acts in believers. A charismatic can receive visions and submit them to examination. A cessationist can refuse the continuity of extraordinary charisms. Neither needs the pineal myth to articulate his position.

7.4. Direct answer to "God could use this function"

Formulation in three times.

First, yes, in the sense of providence. The Creator God is not in metaphysical competition with the processes he sustains. Sleep, of which melatonin is a signal, already belongs to a life before God (Psalm 127:2; Mark 4:38). Useless to demand a second mysterious function for the gland to be worthy. Creation does not need the myth to be honorable.

Second, no, in the sense of the alleged mechanism. The function "visionary doses of pineal DMT" is not established. One cannot say "God uses" what has not been shown. That would be baptizing a hypothesis of popular culture. Providence is not a permit to sacralize any Internet conjecture.

Third, no, in the sense of identification. Even if a molecule one day modulated certain contents of consciousness (hypothesis not demonstrated at endogenous doses), it would not be the Holy Spirit, any more than the air of the lungs is the breath of John 20:22. Visions, if one receives them in a continuationist theology, are discerned by Christ, Scripture, fruit, and the Church, not by a biological marker that moreover no one knows how to dose in this context.

The believer's body is indeed the place where the Spirit dwells. That translates into holiness, love, witness, patience, possibly examined gifts. It does not translate into a protocolization of the pineal. Glorifying God in one's body (1 Corinthians 6:20) passes by marital fidelity, sobriety, service, received rest, not by a hunt for the third eye.

---

8. Evangelical vigilance

Seven points of vigilance, without medical advice and without how-to.

First, syncretism of names. Chaining Holy Spirit, shakti, kundalini, DMT, third eye, and eye of Matthew 6 erases incompatible doctrines (divine person, cosmic energy, molecule, moral idiom). The resemblance of certain behaviors is another subject, to be treated by discernment, not by an improvised endocrinology. A pastor can recognize that a believer trembles without concluding that "it is kundalini" or that "it is necessarily the Spirit." The criteria remain christological, scriptural, and ethical.

Second, spiritual science. Popularization that cites "a study on rats" without the pinealectomies, the nanomoles, or Nichols. Supplements said to activate the pineal, extreme fasts, forced breathings sold as anointing. St John (2016) helps to show the cultural circuit. He does not exhaust current Francophone offers. The reader is invited to ask. What dose? What species? What pinealectomy? What peer review? If the answer reduces to a vignette and a product to sell, discernment already has enough elements.

Third, charismaticism of proof. When a preacher uses neuro vocabulary ("your pineal," "the chemical fire of the Spirit") to authenticate a falling, a vision, or his authority, the biblical criterion is short-circuited. Reminder. The phenomenon is not self-interpreting (induction, expectation, contagion). 1 Corinthians 14 and 1 John 4 remain more decisive than an endocrine metaphor.

Fourth, refusal of care. Explaining a delirious episode, an epilepsy, a depression, or severe insomnia by the opening of the third eye or by a kundalini "that must finish its work" can delay a medical opinion. Suchandra (2021) and Lindahl (2017) justify prudence without obliging one to psychiatrize every prayer. This article poses no diagnosis and gives no medical advice. It only refuses to sacralize the delay of care.

Fifth, inverse mockery. Ridiculing the believer who asks why God made this gland misses the catechetical opportunity. Melatonin, rhythm, body as temple, generous eye. Creation does not need the myth to be honorable. A simple teaching on sleep, rest, and fidelity of gaze can already answer half the anguish.

Sixth, substances. No passage of this article authorizes seeking visions by DMT, ayahuasca, or an analogue. The trials cited are regulated research, with cardiovascular and anxious adverse effects described in the literature. Chaves (2024) recalls it. Frequent confusion to undo. "Endogenous" does not mean "therefore without danger nor outside the law if I bring it from outside." The legality and safety of a controlled substance are not deduced from its possible presence in traces in the organism.

Seventh, calcifications and commercial decalcification. The corpora arenacea are a radiological fact. Their transformation into a narrative of opening or closing of the third eye, then into a market of supplements, does not belong to the endocrinology cited. No "decalcification" protocol is proposed or commented here. No dosing. No how-to. Pastoral vigilance consists in refusing the product, not in improvising a counter-medicine.

---

9. Discussion and conclusion

9.1. What one can say, what one cannot say

This article has sought to answer a pastoral question without ridiculing it and without baptizing it. Four registers have been kept separate. Established fact. Contested hypothesis. Cultural analogy. Theological reading.

On the pineal, the established fact already suffices to honor creation. Neuroendocrine transducer of time. Melatonin. Light pathway retina–SCN–sympathetic. Not a human eye.

On DMT, the Strassman separation into three planes is non-negotiable. The intravenous trials measured brief, intense, dose-dependent effects, without elevation of circulating melatonin, without subjective tolerance at closely spaced doses. The 2001 book hypothesizes a biology of consciousness, death, and the sacred. Nichols (2018), Dean (2019), Glynos (2023), Jiménez and Bouso (2022), and Barker (2022) retain the administration measurements and do not validate the visionary pineal hypothesis. Pinealectomy in the rat, in particular, renders the role of principal source little plausible.

On the third eye, five distinct objects do not reduce to one another. Parietal eye. Human pineal. Ajna. Cartesian pineal. Media composite. None is the eye of Matthew 6.

On kundalini, the academic frame describes bodily repertoires and clinical stakes. It does not identify these repertoires with the Spirit nor with a molecule.

On exegesis, the single or evil eye is a moral metaphor in an argument on treasure, Mammon, and undivided loyalty. The Greek singular does not introduce a supernumerary organ.

On pneumatology, the body is a temple because it is redeemed. The Spirit is a person. Providence does not authorize baptizing a non-established function.

9.2. Assumed limits

Several limits are assumed. Absence of quantification of DMT in the living human brain. Absence of a circadian study of pineal DMT release. Phenomenological analogy Timmermann, not endogenous mechanism. Systematic patristic reception of Matthew 6:22-23 not collated on critical editions. Paginated citation of classical tantric sources not established. Watch of current Francophone evangelical channels and bookshop not done. No invention of figures, DOI, pagination, or results not present in the retained corpus. These limits do not prevent concluding on what is already solid. They prevent overplaying.

9.3. Closing sentence

God did not create a useless gland. He gave the body a night signal, melatonin, regulated by the eyes and by the brain's clock. The idea of a third eye that would pour out DMT to manufacture dreams and visions is a modern story, carried notably by Rick Strassman's book beyond what his intravenous trials of the 1990s measured. Interesting as history of ideas. Weak as science. Foreign to the sense of the eye in the Gospel. The Holy Spirit dwells in the believer's body as a redeemed temple. He is not a hormone. One discerns his gifts otherwise than by a gland. Resemblance of vocabulary (eye, light, vision) is neither anatomical identity nor identity of the Spirit.

---

Sources

Legend. A = peer-reviewed journal article. B = monograph, commentary, university encyclopedia, reference chapter. C = general-audience book, congress abstract, preprint, or text not retained as authority.

A. Neuroendocrinology and light pathway

1. Macchi, M. M. and Bruce, J. N. (2004). Human pineal physiology and functional significance of melatonin. Frontiers in Neuroendocrinology, 25(3-4), 177-195. DOI 10.1016/j.yfrne.2004.08.001. PMID 15589268.
2. Borjigin, J., Li, X. and Snyder, S. H. (1999). The pineal gland and melatonin: molecular and pharmacologic regulation. Annual Review of Pharmacology and Toxicology, 39, 53-65. DOI 10.1146/annurev.pharmtox.39.1.53. PMID 10331076.
3. Simonneaux, V. and Ribelayga, C. (2003). Generation of the melatonin endocrine message in mammals. Pharmacological Reviews, 55(2), 325-395. DOI 10.1124/pr.55.2.2.
4. Berson, D. M., Dunn, F. A. and Takao, M. (2002). Phototransduction by retinal ganglion cells that set the circadian clock. Science, 295(5557), 1070-1073. DOI 10.1126/science.1067262. PMID 11834835.
5. Korf, H.-W. (2024). Photoneuroendocrine, circadian and seasonal systems. Cell and Tissue Research. DOI 10.1007/s00441-024-03913-7.
6. Bertolucci, C. and Foà, A. (2004). Extraocular photoreception and circadian entrainment in nonmammalian vertebrates. Chronobiology International. DOI 10.1081/CBI-120039813.
7. Tosini, G. (1997). The pineal complex of reptiles: physiological and behavioral roles. Ethology Ecology & Evolution. DOI 10.1080/08927014.1997.9522875.

A. DMT: pharmacology, endogenous, critique

8. Nichols, D. E. (2018). N,N-dimethyltryptamine and the pineal gland: separating fact from myth. Journal of Psychopharmacology, 32(1), 30-36. DOI 10.1177/0269881117736919. PMID 29095071.
9. Barker, S. A. (2018). N,N-dimethyltryptamine facts and myths. Journal of Psychopharmacology, 32(7), 820-821. DOI 10.1177/0269881118767648. PMID 29991341. Nichols reply, PMID 29991342.
10. Barker, S. A., McIlhenny, E. H. and Strassman, R. (2012). A critical review of reports of endogenous psychedelic N,N-dimethyltryptamines in humans: 1955-2010. Drug Testing and Analysis, 4(7-8), 617-635. DOI 10.1002/dta.422. PMID 22371425.
11. Barker, S. A., Borjigin, J., Lomnicka, I. and Strassman, R. (2013). LC/MS/MS analysis of the endogenous dimethyltryptamine hallucinogens, their precursors, and major metabolites in rat pineal gland microdialysate. Biomedical Chromatography, 27(12), 1690-1700. DOI 10.1002/bmc.2981. PMID 23881860.
12. Dean, J. G., et al. (2019). Biosynthesis and extracellular concentrations of N,N-dimethyltryptamine (DMT) in mammalian brain. Scientific Reports, 9, 9333. DOI 10.1038/s41598-019-45812-w. PMC6597727.
13. Glynos, N. G., et al. (2023). INMT is not essential for endogenous tryptamine-dependent methylation activity in rats. Scientific Reports, 13, 280. DOI 10.1038/s41598-023-27538-y.
14. Jiménez, J. H. and Bouso, J. C. (2022). Significance of mammalian N,N-dimethyltryptamine (DMT): a 60-year-old debate. Journal of Psychopharmacology, 36(8), 905-919. DOI 10.1177/02698811221104054.
15. Chaves, C., et al. (2024). Why N,N-dimethyltryptamine matters. Frontiers in Psychiatry, 15, 1485337. DOI 10.3389/fpsyt.2024.1485337.
16. Fontanilla, D., et al. (2009). The hallucinogen DMT is an endogenous sigma-1 receptor regulator. Science, 323, 934-937. DOI 10.1126/science.1166127.
17. Cameron, L. P. and Olson, D. E. (2018). Dark classics in chemical neuroscience: DMT. ACS Chemical Neuroscience, 9(10), 2344-2357. DOI 10.1021/acschemneuro.8b00101.
18. Nichols, D. E. (2016). Psychedelics. Pharmacological Reviews, 68(2), 264-355. DOI 10.1124/pr.115.011478. PMID 26841800.
    19a. Strassman, R. J. (1991). Human hallucinogenic drug research in the United States: a present-day case history and review of the process. Journal of Psychoactive Drugs, 23(1), 29-38. DOI 10.1080/02791072.1991.10472572. PMID 1941365.
    19b. Strassman, R. J., Qualls, C. R., Uhlenhuth, E. H. and Kellner, R. (1994). Dose-response study of DMT in humans. I. Archives of General Psychiatry, 51(2), 85-97. DOI 10.1001/archpsyc.1994.03950020009001. PMID 8297216. II. Subjective effects, 98-108. DOI 10.1001/archpsyc.1994.03950020022002. PMID 8297217. Exogenous only.
    19c. Strassman, R. J., Qualls, C. R. and Berg, L. M. (1996). Differential tolerance to biological and subjective effects of four closely spaced doses of N,N-dimethyltryptamine in humans. Biological Psychiatry, 39(9), 784-795. DOI 10.1016/0006-3223(95)00200-6. PMID 8731519.
19. Barker, S. A. (2022). Administration of DMT in psychedelic therapeutics and research and the study of endogenous DMT. Psychopharmacology, 239, 1749-1763. DOI 10.1007/s00213-022-06065-0.
20. Timmermann, C., et al. (2018). DMT models the near-death experience. Frontiers in Psychology, 9, 1424. DOI 10.3389/fpsyg.2018.01424.
21. Borjigin, J., et al. (2013). Surge of neurophysiological coherence and connectivity in the dying brain. PNAS, 110(35), 14432-14437. DOI 10.1073/pnas.1308285110.

A. Cultural history of the pineal and the DMT myth

23. Shoja, M. M., Hoepfner, L. D., Agutter, P. S., Singh, R. and Tubbs, R. S. (2016). History of the pineal gland. Child's Nervous System, 32(4), 583-586. DOI 10.1007/s00381-015-2636-3. PMID 25758643.
24. St John, G. (2016). The DMT gland. International Journal for the Study of New Religions, 7(2), 153-174. DOI 10.1558/ijsnr.v7i2.31949.

A. Kundalini, meditation, clinic

25. Suchandra, H. H., et al. (2021). Kundalini-like experience as psychopathology: a case series and brief review. Complementary Therapies in Clinical Practice, 42, 101285. DOI 10.1016/j.ctcp.2020.101285. PMID 33360561.
26. Maxwell, R. W. and Katyal, S. (2022). Characteristics of kundalini-related sensory, motor, and affective experiences during tantric yoga meditation. Frontiers in Psychology, 13, 863091. DOI 10.3389/fpsyg.2022.863091.
27. Lindahl, J. R., Fisher, N. E., Cooper, D. J., Rosen, R. K. and Britton, W. B. (2017). The varieties of contemplative experience. PLOS ONE, 12(5), e0176239. DOI 10.1371/journal.pone.0176239.
28. Greyson, B. (1993). Near-death experiences and the physio-kundalini syndrome. Journal of Religion and Health, 32, 277-290. DOI 10.1007/BF00990954.
29. Woollacott, M. H., Kason, Y. and Park, R. D. (2021). EXPLORE. DOI 10.1016/j.explore.2020.07.005.
30. Corneille, J. S. and Luke, D. (2021). Spontaneous spiritual awakenings. Frontiers in Psychology, 12, 720579. DOI 10.3389/fpsyg.2021.720579.

A. Exegesis and body as temple

31. Allison, D. C., Jr. (1987). The eye is the lamp of the body (Matthew 6.22-23 = Luke 11.34-36). New Testament Studies, 33(1), 61-83. DOI 10.1017/S0028688500016052.
32. Elliott, J. H. (1994). The evil eye and the Sermon on the Mount. Biblical Interpretation, 2(1), 51-84. DOI 10.1163/156851594X00042.
33. Viljoen, F. P. (2009). A contextualised reading of Matthew 6:22-23. HTS Teologiese Studies / Theological Studies, 65(1), a152. DOI 10.4102/hts.v65i1.152.
34. Whitters, M. F. (2006). The eye is the lamp of the body. Irish Theological Quarterly, 71(1-2), 77-88. DOI 10.1177/0021140006072570.
35. Gupta, N. K. (2010). Which body is a temple (1 Corinthians 6:19)? Catholic Biblical Quarterly, 72(3), 518-536.

B. Instruments, not articles

• Strassman, R. (2001). DMT: The Spirit Molecule: A Doctor's Revolutionary Research Into the Biology of Near-Death and Mystical Experiences. Rochester, VT: Park Street Press. ISBN-10 0-89281-927-8; ISBN-13 978-0-89281-927-0. LCCN 00-050498. General-audience monograph by the author of the IV trials. Source of the pineal / NDE / mysticism hypotheses. To be cited for plane (b), never as proof of plane (a). Analysed by St John 2016; criticised by Nichols 2018.

• Lokhorst, G.-J. Descartes and the pineal gland. Stanford Encyclopedia of Philosophy. https://plato.stanford.edu/entries/pineal-gland/

• Arendt, J. and Aulinas, A. Physiology of the pineal gland and melatonin. Endotext, NCBI Bookshelf, NBK550972. https://www.ncbi.nlm.nih.gov/books/NBK550972/

• Samuel, G. (2008). The Origins of Yoga and Tantra. Cambridge University Press. DOI 10.1017/CBO9780511818820.

• Betz, H. D. (1979; Hermeneia 1995); Davies, W. D. and Allison, D. C., Matthew 1-7 (ICC); Luz, U., Matthew 1-7.

• Fee, G. D., God's Empowering Presence (1994); Fee, commentary on 1 Corinthians (NICNT); Thiselton, A. C., NIGTC 1 Corinthians.

C. Do not use as proof

• Cozzi et al. (2011). Indolethylamine N-methyltransferase expression in primate nervous tissue. Society for Neuroscience congress abstract 840.19, not an article. Often cited for INMT in the primate pineal. Do not oversell.
• Glynos et al., bioRxiv 2024, DOI 10.1101/2024.04.19.589047. Preprint cited by Chaves. Not a source A until the journal version is verified.
• Low-quality reviews that affirm as a fact that "all the enzymes of DMT in the pineal explain the NDE." Example spotted then set aside: Chaudhary et al., Cardiometry, 2022, DOI 10.18137/cardiometry.2022.25.13631368. Do not bring it into the positive bibliography. It repeats the myth that Nichols dismantles, under cover of systematic review.
• Videos, commercial yoga pages, "third eye" channels, fluoride or detox.