David Nutt of Imperial College London Department of Medicine, the senior investigator of the studies, said: “Psychedelics have been characterized as’mind expanding’ drugs. It has therefore been commonly assumed that they increase brain activity. However, we found that the soulcybin review drug actually decreased activity in areas where there were the most dense connections to other areas.” “These hubs constrain and organize our world experience.” We know that deactivating regions like these leads to an experience where the world seems strange.