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0This mega-analysis published in Nature Medicine integrates eleven neuroimaging datasets to establish a definitive map of how psychedelic drugs restructure human brain communication. By analyzing five substances—psilocybin, LSD, DMT, mescaline, and ayahuasca—the researchers identified a universal signature of increased connectivity between high-level thinking areas and basic sensory networks. Conversely, the study found that internal communication within individual networks often weakens, though these effects vary more significantly across different substances. The team utilized Bayesian hierarchical modeling to overcome past scientific inconsistencies and provide a more certain probabilistic framework for these neural changes. Ultimately, this comprehensive synthesis serves as a foundational benchmark for future research into the therapeutic mechanisms and clinical applications of psychedelics.
References:
Girn M, Doss M K, Roseman L, et al. An international mega-analysis of psychedelic drug effects on brain circuit function[J]. Nature Medicine, 2026: 1-12.
