Nature neuroscience

How psychedelics affect the brain

Updated

Abstract

Psychedelics are serotonin 2A receptor agonists that can lead to profound changes in perception, cognition, and mood.

  • Psychedelics operate through diverse psychoactive molecules that vary in potency and how they are processed in the body.
  • Serotonin receptors play a crucial role in the effects of psychedelics, influencing various molecular signaling pathways.
  • Psychedelics may alter neuronal activity patterns in multiple brain regions, affecting how neurons communicate.
  • Transcriptional changes induced by psychedelics could lead to long-lasting modifications in brain structure.
  • Neuroimaging studies indicate that psychedelics impact functional connectivity within brain areas involved in higher cognitive functions.

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