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The Evidence

THE SCIENCE
BEHIND PSILOCYBIN

Psilocybin loosens the brain’s habitual patterns and makes new ones easier to form. Integration happens inside that window, and it is what makes the change last.

What Happens in the Brain

Digital illustration of a human brain with interconnected neural network lines, with the word 'BEFORE' overlaid.

the brain on
autopilot

Deep in the brain sits the default mode network: the system behind your sense of self and the loops you run without thinking. Every time a pattern fires, it wires a little tighter. The oldest ones run so automatically they can feel like simply who you are.

A digital illustration of a human brain with interconnected glowing white dots and lines, overlaid with the text "DURING".

the patterns
loosen

Psilocybin powerfully disrupts the default mode network (DMN). Regions that rarely speak to each other start to connect, and patterns that normally won't move become flexible. This is the felt sense of a mind briefly freed from its usual grooves.

A digitally edited green brain with neural connections overlaid, featuring the word 'AFTER' written across it.

a window of
heightened plasticity

The experience ends, but the flexibility doesn't end with it. Some of these brain changes persist for weeks — a stretch when the brain stays unusually receptive to new habits and new ways of thinking. This is the moment when real change is possible.

Siegel et al., Nature, 2024. Daws et al., 2022. Gattuso et al., 2022.

Why This Window Decides the Outcome

The window is temporary. Left alone, it closes and the old patterns find their way back. That’s why the work around the experience matters as much as the experience itself, and the research to date ties both preparation and integration to better outcomes.

Diagram illustrating neuroplasticity with four sections labeled Preparation, Experience, Integration, and Community, connected by a neuroplasticity window at the top.

→ Preparation
sets the intention

It clarifies what you’re actually working on and builds the trust that lets the experience go deep.

→ Integration
drives the change

Working with a therapist or coach, you turn what surfaced into meaning, and meaning into the habits and decisions of daily life, reinforcing new pathways while the brain is still ready to lay them down.

→ Psilocybin
opens the door

Preparation and integration are how you walk through it, and how your growth lasts.

Logo of TruxTUN with stylized mountain and a running figure, connected to the Boston University logo with a chain link design.

Research Partnership

The first public
panel on our BU study

Boston University's Sargent College presents its IRB-approved study, Veterans' Experiences of Supervised Psychedelic-Assisted Healing Retreats. Truxtun leadership joins Sargent researchers on the panel.