From Ars Technica · · 1m 30s
Psychedelics reveal hidden brain order
Brain scans show psychedelics create order beneath chaos, not random breakdown.
In brief
Brain scans show psychedelics create order beneath chaos, not random breakdown. Psilocybin reduces brain network boundaries, creating temporary unity between internal and external worlds. Originally reported by Ars Technica.
Brain chaos myth
For about a decade, mainstream science believed psychedelics caused brain chaos by breaking neural highways.
“Think of the networks of the brain as highways”
PsiConnect study
Stoliker’s team scanned 62 first-time psilocybin users with MRI and EEG to measure brain activity during four contexts.
“We wanted ecological validity”
Meaningful experiences
Half the participants ranked their session as life-changing, with 24 placing it in their personal top five.
“Half of the participants ranked their session among the most meaningful experiences of their lives”
Blurred boundaries
Under psilocybin, sensory regions lost dominance while associative regions gained, reducing internal-external world separation.
“It seems like the brain’s ability to construct reality, or imagination, or our associations, our beliefs, our sense of self, these faculties had more dominance over sensory areas”
Network reorganization
Brain network connections weakened internally while between-network connections strengthened, reducing modularity by 85 percent.
“The gap between eyes-open and eyes-closed connectivity shrank by 85 percent”
Hidden order
Researchers used AI to find ordered structures in brain activity that standard averaging methods miss.
“The problem with this analysis is that it runs the risk of missing ordered structures that appear for a brief period and then disappear into chaos”
Context matters
Brain activity clusters separated into four distinct groups: rest, meditation, music, and eyes-open video.
“The trajectories separated into four distinct clusters corresponding to rest, meditation, music, and the movie”
Embeddedness
The default mode network and visual network each contributed over 20 percent to reduced self-external world separation.
“The default mode network is strongly associated with the sense of self: daydreaming, mind wandering, thinking about yourself”
Psychological shifts
Participants reported positive psychological changes the next day, with scores ranging from, 100 to 100.
“For the vast majority of our participants, we found they had positive psychological changes the next day”
Therapeutic potential
Stoliker suggests tuning context variables like music or visuals could improve psychedelic therapy outcomes.
“If context isn’t just mood-setting but is mechanically shaping brain organization, Stolkier argues, then the room, the playlist, and the instructions start to look like clinical variables”
Future challenges
Researchers note individual differences in subjective experiences despite identical embeddedness scores and healthy participant limitations.
“As of now, the researchers admit that when two people report identical “embeddedness” scores, they can potentially have very different subjective experiences”
What to remember
Psilocybin reduces brain network boundaries, creating temporary unity between internal and external worlds.
