An international collaboration led by Cornell researchers used a combination of psilocybin and the rabies virus to map how – and where – the psychedelic compound rewires the connections in the brain. Specifically, they showed psilocybin weakens the cortico-cortical feedback loops that can lock people into negative thinking. Psilocybin also strengthens pathways to subcortical regions that turn sensory perceptions into action, essentially enhancing sensory-motor responses. The findings published D