In F.I.V.E.’s webinar, Dr. Chris Timmermann joined Joel Brierre and Victoria Wueschner for a deeper conversation on 5-MeO-DMT, DMT, meditation, and the scientific study of consciousness.
Dr. Timmermann is the co-director of the UCL Center for Consciousness Research, where his work explores how psychedelics and meditation can help us better understand the relationship between mind, brain, and human experience. He has helped pioneer some of the first investigations into how DMT and 5-MeO-DMT act in the brain, with a particular focus on neuroscience, phenomenology, ethics, and consciousness research.
In this webinar, Chris moved beyond the usual conversation around psychedelics and mental health, asking a much bigger question: Can compounds like 5-MeO-DMT help us study the very nature of consciousness itself?
This interview has been edited for length and clarity.
Q: Why is 5-MeO-DMT such an important compound for consciousness research?
Dr. Chris Timmermann: When we talk about psychedelic therapy, we often talk about neuroplasticity, brain change, and mental health outcomes. But as far as we know those changes do not happen in isolation from experience. They happen alongside a powerful subjective event. Because mental health is mental, it has to do with the mind, the consciousness, with the way someone relates to their suffering, their memories, their identity, and their life.
5-MeO-DMT is especially interesting because it appears to radically alter the structures that usually organize experience. With many psychedelics, there may be imagery, memories, emotions, or visions. With 5-MeO-DMT, what often becomes most prominent is the dissolution of self. The usual sense of “I” can fall away. Time, space, body, thought, and narrative can become radically altered or absent.
That makes it a very powerful tool for studying one of the core questions in consciousness science: What remains when the usual contents of experience are stripped away?
Q: You speak about 5-MeO-DMT as a way to study “minimal phenomenal experience.” What does that mean?
Dr. Chris Timmermann: In consciousness research, there is an ongoing question around whether we can identify the simplest possible form of conscious experience.
Usually, our experience is filled with content. We have thoughts, emotions, bodily sensations, memorises, plans, perceptions, and a sense of self. All of that creates the world we live in from moment to moment.
The idea of a minimal phenomenal experience is to ask: What happens if we remove most, or all, of those contents, but awareness remains?
This is an old question in philosophy and contemplative traditions. Some philosophers argue that there is always at least a minimal sense of self in consciousness – that experience always has a kind of “for-me-ness.” In other words, experience is always happening to someone.
But 5-MeO-DMT gives us a rare opportunity to test that. People often report states where the ordinary sense of self disappears almost completely. There may be no body, no story, no observer, no separation between self and world. And yet, something seems to remain.
That is why 5-MeO-DMT is so compelling scientifically. It allows us to ask whether awareness can exist without the usual structures of self.
Q: How is 5-MeO-DMT different from DMT in terms of what it shows us about the mind?
Dr. Chris Timmermann: DMT and 5-MeO-DMT are both short-acting and structurally related, but phenomenologically they are very different.
DMT tends to construct worlds. People often report immersive visual environments, complex geometrics, and encounters with beings or entities. In our DMT research, we become interested in those entities not simply because they are fascinating, but because they may tell us something about how the mind constructs experience.
With extended DMT infusions, we can stabilize the peak of the experience for longer and ask people in real time whether they are encountering an entity or not. That allows us to compare moments where the mind appears to be reconstructing something – a being, a world, a meaningful object – with moments where that reconstruction is not happening.
5-MeO-DMT seems to move in the opposite direction. It is less about constructing an alternate world and more about deconstructing the ordinary one. Rather than building a rich visionary landscape, 5-MeO-DMT often dissolves the structures that usually hold experience together: self, body, time, space, and narrative.
So, in a simplified way, DMT helps us study reconstruction. 5-MeO-DMT helps us study deconstruction.
Q: You also speak about brain entropy. What happens in the brain during 5-MeO-DMT?
Dr. Chris Timmermann: Brain entropy is a way of measuring the complexity or unpredictability of brain activity. The more unpredictable the brain signal, the higher the entropy.
In our 5-MeO-DMT research, we found that as people reported stronger experiences of ego dissolution or “no-self,” brain entropy increased. That is a very important finding because it is not necessarily what you would expect.
If someone reports an experience with fewer contents – less imagery, less thought, less self, less narrative – you might assume the brain would become quieter or more ordered. But with high-dose 5-MeO-DMT, we saw the opposite. The brain becomes more disorganized, more unpredictable, more entropic.
One way to understand this is through what we described as a saturation model. It may not be that nothing is happening. It may be that too much is happening for the mind to organize it into ordinary experience.
That fits with some reports from 5-MeO-DMT experiences where people describe an “everything or nothing” state. It is not empty in the usual sense. It is more like all distinctions collapse. There is no clear object, no separate subject, no specific content that can be held onto, but there is still a sense of awareness, possibility, or aliveness.
Q: Can you explain the “temperature” or Ising model you used in your presentation?
Dr. Chris Timmermann: The Ising model is a way of thinking about how systems organize themselves. In the presentation, I used it as a metaphor for the mind and brain.
Imagine a system where temperature can be increased or decreased. At the right temperature, structures begin to emerge. In the mind, those structures might be thoughts, emotions, bodily sensations, the sense of self, the world of ordinary experience.
In everyday consciousness, we seem to operate in a critical range. There is enough order for us to function, predict, relate, and make sense of the world, but there is also enough flexibility for us to adapt and change.
If the “temperature” becomes too low, the system becomes too rigid. There is very little information being processed. That may be closer to what we see in anesthesia or coma, where conscious experience is reduced or absent.
With high-dose 5-MeO-DMT, we see something very different. The temperature seems to go very high… entropy increases, the system becomes saturated. The ordinary structure of experience no longer hold, and people may report that everything collapses into a state of undifferentiated awareness, whiteness, void, or totality.
With DMT, the process appears more dynamic. There may be a movement between disorder and temporary moments of order, where entities or worlds emerge. The brain seems to find signal in the noise and reconstruct experience, even if only briefly.
Q: Is 5-MeO-DMT similar to advanced meditation?
Dr. Chris Timmermann: This is one of the most interesting questions, and the answer is more nuanced than simply saying yes.
There has been a long-standing idea that psychedelics may offer something like meditation on steroids – that a person can reach states in one session that might otherwise take decades of practice. But we need to be careful with that claim.
In our research, we studied an advanced meditation practitioner with many years of retreat experience. We compared non-dual meditation with low-dose 5-MeO-DMT, high-dose 5-MeO-DMT, and placebo.
High-dose 5-MeO-DMT produced a very powerful state, but it was not the same as non-dual meditation. In high-dose 5-MeO-DMT, the body may be completely gone. The room may disappear. There may be no sensory connection to the world.
Non-dual meditation is different. It is not necessarily about disappearing from the world. It is more like being fully in the world without conceptualizing it in the usual way. The sense may still be present, but there is no strong separation between “me” and “what is out there.”
What surprised us was that low-dose 5-MeO-DMT overlapped much more strongly with non-dual meditation. In that state, the world may still be present, but the usual conceptual separation softens. There can be a sense of de-conceptualization, equanimity, and reduced separation between self and world.
So high-dose 5-MeO-DMT may reach something through saturation. Low-dose 5-MeO-DMT and non-dual mediation may approach something similar through subtraction.
That opens up an important research question: Are there multiple routes into foundational forms of consciousness?
Q: Joel, during the Q&A portion, you spoke about dosing language and the idea of a “heroic dose.” Why is that important in the 5-MeO-DMT space?
Joel Brierre: I would be very cautious about using the word “heroic” when we are talking about 5-MeO-DMT.
With this medicine, the more important distinction is not heroic versus non-heroic. It is safe versus unsafe. Appropriate versus inappropriate. Supported versus unsupported.
5-MeO-DMT is highly dose-dependent, but it is also highly person-dependent. Different people can have very different sensitivities based on physiology, psychology, medications, trauma history, nervous system state, and other factors.
That is why anyone serving this medicine needs to know what to look for. They need to understand screening, dosing, sensitivity, safety, and the many factors that can move someone toward a higher-risk experience.
Intensity should not be glamorized. More is not automatically better. In this work, precision and responsibility matter more than intensity.
Q: After looking at all of this, do psychedelics reveal the nature of consciousness?
Dr. Chris Timmermann: That is the big question. I would not say that psychedelics simply reveal the nature of consciousness in a final or absolute way. The entities people meet on DMT are not necessarily “the nature of consciousness.” The whiteout or no-self state of 5-MeO-DMT is not necessarily the final truth either.
But psychedelics may reveal something about potentiality.
They show us how experience can be constructed, deconstructed, and reconstructed. They show us how the mind makes meaning, loses meaning, and finds meaning again.
This may be one reason these experiences often carry such a strong noetic quality – the feeling that something deeply significant has been revealed, even if it cannot be easily put into words.
In that sense, psychedelics may point us toward consciousness as a process of sense-making. They may show us that life itself is always making sense of its conditions, adapting, reorganizing, and renewing itself.
So maybe psychedelics do not hand us a simple answer to the nature of consciousness, but they do give us a powerful way to study the living process through which meaning, self, and world come into being.