Largest Brain-Scan Analysis Finds Shared Psychedelic ‘Neural Fingerprint’

Overview

• An international team published a Nature Medicine mega-analysis that pooled 11 neuroimaging datasets covering 267 people across more than 500 scans.
• The study reports a common pattern across LSD, psilocybin, DMT, mescaline and ayahuasca that temporarily flattens the brain’s usual hierarchy and may help explain reports of ego dissolution.
• Psychedelics strengthened links between networks for high-level thinking and those for sight and movement, increasing cross-talk between thought and the senses.
• Researchers also detected changes in deeper brain regions, including the caudate, putamen and cerebellum, showing effects that reach beyond the cortex.
• The authors urge head-to-head studies under shared protocols and note limits such as small ayahuasca samples and varied scanning methods across the source studies.