The default mode network in the brain, which is most active when not engaged in any specific task, is involved in self-reflection, worry, rumination, thinking about the future, thinking about the past, and creating a sense of self.
The default mode network plays a role in time travel, theory of mind (the ability to understand the thoughts of others), and the narrative self (the story we tell ourselves about who we are).
Under the influence of psychedelics or in experienced meditators, the default mode network becomes quiet, leading to reports of ego dissolution and significant drops in activity.
The findings of psychedelic science regarding the default mode network have implications for the study of consciousness and the self, although there are alternative theories that require further exploration.
For an extra dose of awe, we're revisiting our conversation with author Michael Pollan. He chats with Maya about the fascinating science of psychedelics and how plants have the power to change our minds. Michael also gives us a glimpse into his personal experience with psychedelic trips and tries to convince scaredy-cat Maya to give them a try.
For a behind-the-scenes look at the show, follow @DrMayaShankar on Instagram.