Psilocybin and your brain: It’s not just 'chaos' happening in there

The 'chaos' myth

For a decade, the standard take on how psychedelics affect the brain has been that they just induce total chaos. The idea was that your brain's orderly networks—the ones managing your senses and your sense of self—just start firing wildly, like a highway turning into a demolition derby. Neuroscientist Devon Stoliker from Monash University says that framing never really tracked, though. It didn't explain why people have such deep, meaningful, or clear experiences while tripping. It's giving "incomplete data," no cap.

The PsiConnect experiment

Stoliker’s team launched a study called PsiConnect to get the real tea. They had 62 people who had never touched psychedelics take 19 milligrams of psilocybin. The participants spent their time in an MRI or EEG scanner going through four settings: resting, guided meditation, listening to music, and watching clouds in a video.

Crucially, the researchers didn't make them do cognitive tasks. Stoliker notes that giving someone a task while they're tripping is a major L because it 'grounds' them and interrupts the exact state researchers are trying to study.

Finding the order

When the team stopped using standard, boring averaging methods (which usually wash out the interesting stuff) and fed the data into a machine-learning tool called CEBRA, the plot thickened. Instead of chaos, they found high-level organization.

Under psilocybin, the brain’s activity became more distinct depending on the context—like whether the person was meditating or listening to music. The 'default mode network,' which is your internal narrative and sense of self, started talking way more to the visual system. Basically, the boundary between what is 'you' and what is 'the outside world' started to blur. Stoliker calls this 'embeddedness.' The more profound the person’s experience was, the more clearly the AI could identify what they were doing just by looking at their brain activity.

Why it matters

Participants reported major positive psychological shifts the next day—more peace, acceptance, and connection. This research suggests that psychedelics aren't just breaking your brain; they’re temporarily shifting how your brain builds your reality. It turns out the barrier between your internal world and the external one is a lot thinner than we think. Real talk, this could be key to understanding why these substances are so impactful in therapeutic settings.