LSD, DMT, Psilocybin Alter Memory, Empathy, Cognition

Bottom line: Psychedelics like LSD, DMT, and psilocybin may alter memory, empathy, and cognition, but the effects are varied and not fully understood, with some studies suggesting enhanced emotional empathy and mixed results on memory and attention.

Somewhere in the archives of human experimentation, a researcher once asked: What if the mind isn’t a machine, but a kind of forest — where thoughts are trees, and consciousness is the soil? That question might as well be the answer to a decades-old debate: do psychedelics enhance or disrupt the mind? The truth is neither simple nor surprising — it’s messy, fascinating, and deeply human.

The Mind as a Forest: A New Way to Think About Psychedelics

Imagine a world where your thoughts are not just electrical impulses in the brain, but something more — a kind of ecosystem, where ideas grow, connect, and evolve. This is a metaphor long associated with psychedelics. But what if that metaphor is more than poetic? What if it helps explain how these substances work?

A systematic review of 32 placebo-controlled studies, published between 1990 and 2025, suggests that psychedelics like LSD, DMT, and psilocybin don’t just “trip” the brain; they rewire it. They don’t just make you feel things — they make you think differently.

One consistent finding is that psychedelics tend to enhance emotional empathy — the ability to feel what others are feeling. This is a big deal. Empathy is the cornerstone of human connection, and the idea that a single dose of psilocybin could make someone more compassionate is both profound and strange. But here’s the twist: they don’t seem to affect cognitive empathy — the ability to understand another person’s mental state. This suggests that psychedelics are more about feeling than understanding, a subtle but important distinction.

The Cognitive Forest: Memory, Attention, and the Limits of Science

If the mind is a forest, then memory is the roots, attention is the canopy, and inhibition is the soil. Psychedelics can affect all three — sometimes in ways that defy logic.

When it comes to memory, the results are mixed. Some studies found that psychedelics impair memory, especially in tasks requiring recall or recognition. Others found no effect, or even a slight enhancement. This inconsistency is partly because memory is a complex system — it’s not a single function, but a network of processes. Psychedelics might disrupt one part of the network while leaving others untouched. For example, a study found that participants were worse at recognizing negative stimuli under the influence of psychedelics — a finding that could have implications for how we process trauma or emotional pain.

Attention and inhibition — the mental brakes and gas pedals — are also affected. Dose-dependent impairments were seen in many of the tasks used to measure these functions. But again, the results aren’t uniform. Some studies found no effect at all, suggesting that the impact of psychedelics on attention and inhibition depends on the timing of the assessment and the type of task.

What’s even more surprising is that some studies found no effect at all on these functions. This is a sign that the science is still in its early stages. The researchers note that it’s hard to find a reliable placebo for these substances — their effects are so unique, so subjective, that even the most rigorous studies can’t fully account for the “placebo” effect. This makes it harder to draw clear conclusions about what psychedelics do to the mind.

The Brain as a Network: What fMRI Reveals

To understand what’s really happening in the brain, we need to look beyond behavior and into the structure of neural activity. That’s where functional magnetic resonance imaging (fMRI) comes in. A recent review of fMRI studies on psilocybin found that the drug appears to alter functional connectivity — the way different parts of the brain communicate with each other.

These changes are most pronounced in regions like the amygdala, the anterior cingulate cortex, and the prefrontal cortex — all areas involved in emotion, decision-making, and self-awareness. But the findings aren’t entirely consistent. Some studies found that psilocybin increases connectivity between these regions, while others found the opposite. This variability is partly due to differences in study design, participant selection, and methodology — all of which are still being refined.

What’s clear, however, is that psilocybin doesn’t just “turn off” the brain. It reconfigures it. This could explain why some people report profound insights or emotional breakthroughs after a session — the brain is literally reorganizing its neural pathways. But again, the science doesn’t tell us why this happens or what it means for long-term mental health.

Frequently Asked Questions

Q: Can psychedelics improve empathy?
A: Yes, studies consistently show that psychedelics enhance emotional empathy — the ability to feel what others are feeling. But they don’t seem to affect cognitive empathy — the ability to understand another person’s mental state.

Q: Do psychedelics impair memory?
A: It depends. Some studies found that psychedelics impair memory, especially in tasks requiring recall or recognition. Others found no effect or even a slight enhancement. The variability is due to the complexity of memory and the specific tasks used in the studies.

Q: Are the effects of psychedelics temporary or long-lasting?
A: The science is still unclear. Some studies suggest that the changes in empathy or memory might fade quickly, while others hint at more enduring effects. Long-term follow-up is needed to determine the true duration of these effects.

Q: Can psychedelics improve brain function?
A: Some fMRI studies suggest that psychedelics alter functional connectivity in the brain — the way different regions communicate. This could explain some of the reported emotional and cognitive changes. But more research is needed to understand the full implications.

Q: Are there risks to using psychedelics?
A: The review doesn’t address safety or risks, as it focuses on cognitive and psychological effects. However, it’s important to note that psychedelics can have intense and unpredictable effects, especially in vulnerable individuals. This review is purely about what the science shows — not what it recommends.

Sources

• ¶Effects of LSD, DMT and psilocybin on cognitive and psychological functions: A systematic review of the literature.
• ¶Psilocybin effects on brain functional connectivity: a systematic review of fMRI studies.
• ¶The Effect of Psychedelics on Associative Learning: a Systematic Review

Educational Disclaimer

This article is for informational and educational purposes only. It is not medical advice, mental health advice, diagnosis, treatment guidance, or a recommendation to use any substance, supplement, therapy, or protocol.

We review publicly available research and explain what the evidence may suggest. Some studies may be early-stage, observational, animal-based, lab-based, theoretical, or incomplete. Always consult a qualified professional before making health-related decisions.

If you or someone you know is struggling, you are not alone. In the US, call or text 988 (Suicide & Crisis Lifeline). Elsewhere, contact your local emergency or crisis service.

Researched and drafted by Spore, ShroomWire’s AI research assistant, and reviewed by the ShroomWire editorial team before publishing.