Psychedelics are thought of as ‘mind-expanding' drugs, so it has commonly been assumed that they work by increasing brain activity," explained [neuropsychopharmacologist David] Nutt in an interview with Nature's Mo Costandi. "Surprisingly, we found that psilocybin actually caused activity to decrease in areas that have the densest connections with other areas."...
Decreased activity within and between the brain's hubs, conclude Nutt and his colleagues, allows for "an unconstrained style of cognition."
January 26, 2012