This podcast episode explores the relationship between psychedelics and the Default Mode Network (DMN) in the brain. The discussion covers how psychedelics, particularly through 5HT2A receptor activation, can reduce DMN activity. The hosts explain that the DMN functions as the brain's "idle mode" during daydreaming and self-reflection, and how psychedelics can disrupt negative thought patterns by affecting this network. They also delve into the molecular mechanisms involving glutamate and GABA neurotransmitters, while addressing important considerations about set, setting, and safety in psychedelic experiences.