Skip to main content

Verified by Psychology Today


DMT, Aliens, and Reality — Part 1

Psychedelic drug phenomena do not justify radical new views of reality.

Kaleidoscopic geometric patterns are typical of DMT visions.
Kaleidoscopic geometric patterns are typical of DMT visions.

Dimethyltryptamine (DMT) is a naturally occurring psychedelic drug found in many plants and animals, and it has been claimed to naturally occur in the human brain itself (Strassman, 2001). DMT, less well-known than other psychedelics such as psilocybin or LSD, is striking for the brevity and intensity of its effects. When smoked, for example, hallucinogenic effects begin almost immediately and resolve within 30 minutes. As a result, it is sometimes known facetiously as the “businessman’s lunch trip” (Cakic, Potkonyak, & Marshall, 2010).

One of the most remarkable features of the DMT experience is the frequency with which users encounter non-human intelligences, often resembling aliens. Even more remarkably, some users come away from these encounters convinced that these entities are somehow real (Strassman, 2001). The psychological aspects of such experiences have not yet been adequately explored by scientific researchers.

In the 1990s, psychiatrist Rick Strassman conducted pioneering research on the effects of DMT, described in his book DMT: The Spirit Molecule. This was the first time in over 20 years that the US government had allowed human studies on psychedelic drugs since such research had been effectively banned.

Volunteers, who were all experienced users of psychedelic drugs, found that high doses of DMT had a usually overwhelming and instantaneous psychedelic effect, which Strassman described as a “nuclear cannon.” As this rush progressed, most volunteers lost awareness of their bodies and of their surroundings at least until the effects peaked after about two minutes (Strassman, Qualls, Uhlenhuth, & Kellner, 1994).

After a few minutes, volunteers were able to begin describing their ongoing experience, which normally lasted 30 minutes. All volunteers experienced visual imagery that could be seen with eyes open or closed. Colours were brighter, more intense and more deeply saturated than in normal awareness or dreams. Many participants saw kaleidoscopic geometric patterns, as well as concrete recognisable scenes. Typically, participants felt initial anxiety at the rush effect, which was frequently followed by intense euphoria, although mixed emotions, such as fear and excitement, were also common. Mentally, participants noted that after their initial confusion subsided, their thought processes seemed clear and normal and they felt able to observe what was happening (Strassman, et al., 1994).

Strassman (2001) reported that “about half” of the 60 volunteers entered what he described as “freestanding, independent levels of existence” of a highly unusual nature. These places were inhabited by what volunteers described as intelligent “beings,” “entities,” “aliens,” “guides,” and “helpers.” These appeared in a variety of forms, such as clowns, reptiles, mantises, bees, spiders, cacti, and stick figures.

These beings have been reported by other investigators, including Terrence McKenna, who described them as “self-transforming machine elves,” as well as in more sober case reports from research on people with schizophrenia conducted in the 1950s. Strangely enough, reports of these kinds of beings seem to be unique to DMT, as Strassman was unable to find anything similar in the research literature on other psychedelic drugs.

There were some consistent themes in experiences of entity contact. Participants frequently reported that the beings seemed to be waiting for them. Volunteers were subjected to an examination by these beings in what appeared to be a technologically advanced setting. Volunteers felt like their mind and body was probed and tested, or even modified in some unexplained way. The beings communicated with the user through gestures, telepathy, or visual imagery. Sometimes the entities seemed loving and caring, other times emotionally detached. Strassman noted the striking parallels between these entity contact experiences and accounts of alien abduction. He considered that “alien abduction” experiences might occur due to the spontaneous release of naturally occurring DMT in the human brain, although this theory has never been tested.

Intriguingly, many volunteers refused to believe that these experiences were hallucinations or dreams, as they seemed too real. Strassman reported being initially quite baffled by and unprepared for the frequency of these entity experiences among his volunteers. In his book, he even entertains the idea that these entities are genuine inhabitants of some sort of normally invisible alternative reality, perhaps of a parallel universe.

From a hard-nosed scientific perspective, such claims are hard to believe, to say the least. The idea that there are invisible realities inhabited by intelligent entities that cannot be detected by any empirical means but can be perceived only by people who are in altered states of brain chemistry is difficult to reconcile with a modern scientific worldview.

Strassman expresses a more general belief in what I would call psychedelic mysticism. This is the belief that psychedelic drugs including LSD and psilocybin, as well as DMT, can provide true insights into the deeper nature of reality. For example, after using these drugs, people may become convinced that there are realities beyond the everyday one, that there is life after death, and that there is an objective spiritual presence in the universe.

Why people encounter what appear to be non-human entities while on DMT but not on other drugs is currently unknown. The reasons why some volunteers were convinced these entities are real are also not understood but probably have a great deal to do with psychological factors that influence people’s judgments about what is real. I will discuss these factors in detail in my next post.

Following Scott McGreal on Facebook, Google Plus, or Twitter.

© Scott McGreal. Please do not reproduce without permission. Brief excerpts may be quoted as long as a link to the original article is provided. Image credit: "Land of psychedelic illuminations" by Brian Exton of

Other posts about psychedelic drugs and spirituality:

DMT, aliens and reality – part 2

DMT: Gateway to Reality, Fantasy or What?

Psilocybin and personality


Cakic, V., Potkonyak, J., & Marshall, A. (2010). Dimethyltryptamine (DMT): Subjective effects and patterns of use among Australian recreational users. Drug and Alcohol Dependence, 111(1–2), 30-37. doi: 10.1016/j.drugalcdep.2010.03.015

Lange, R., Thalbourne, M. A., Houran, J., & Storm, L. (2000). The Revised Transliminality Scale: Reliability and Validity Data from a Rasch Top-Down Purification Procedure. Consciousness and Cognition, 9(4), 591–617. doi: 10.1006/ccog.2000.0472

Newman, L. S., & Baumeister, R. F. (1996). Toward an explanation of the UFO abduction phenomenon: Hypnotic elaboration, extraterrestrial sadomasochism, and spurious memories. Psychological Inquiry, 7(2), 99-126.

Roche, S. M., & McConkey, K. M. (1990). Absorption: Nature, assessment, and correlates. Journal of Personality and Social Psychology, 59(1), 91-101. doi: 10.1037/0022-3514.59.1.91

Spanos, N. P. (1996). Multiple identities and false memories: A sociocognitive perspective. Washinton DC: American Psychological Association.

Strassman, R. J. (2001). DMT: The Spirit Molecule. Rochester, Vermont: Park Street Press.

Strassman, R. J., Qualls, C. R., Uhlenhuth, E. H., & Kellner, R. (1994). Dose-response study of n,n-dimethyltryptamine in humans: II. subjective effects and preliminary results of a new rating scale. Archives of General Psychiatry, 51(2), 98-108. doi: 10.1001/archpsyc.1994.03950020022002

More from Scott A. McGreal MSc.
More from Psychology Today