I got the opportunity—a non-pharmacological opportunity—to peer into my own default mode network soon after I interviewed Judson Brewer, the psychiatrist and neuroscientist who studies the brains of meditators. It was Brewer, you’ll recall, who discovered that the brains of experienced meditators look much like the brains of people on psilocybin: the practice and the medicine both dramatically reduce activity in the default mode network.
