A study shows psilocybin works by scrambling your sense of self. In a landmark study, researchers at Washington University gave healthy volunteers a single high dose of psilocybin and tracked their brain activity before, during, and after the experience. What they found surprised them. Psilocybin didn’t just alter perception; it desynchronized one of the brain’s most important networks: the default mode network. This system is deeply involved in how we reflect, remember, and construct a sense of self. The disruption was dramatic during the trip, but that wasn’t the end of it. Subtle changes in the network’s activity persisted for up to three weeks. The more intense the psychedelic experience, the longer the changes lasted. Participants rated their experiences using a validated scale that measured feelings of awe, ego loss, and connectedness. These ratings closely matched the level of disruption seen in brain scans, suggesting that psilocybin’s effects aren’t just psychological, but deeply neurological. This kind of “reset” may be why psilocybin is showing promise for mental health conditions like depression and PTSD, where the default mode network is often overactive. Disrupting it – even briefly – might give the brain a chance to form new, healthier patterns. But researchers warn: this doesn’t mean psilocybin is ready for self-medication. It’s not yet FDA-approved and still carries risks when used outside clinical trials. Learn more: "Researchers Uncover How Psilocybin Works in the Brain." Psychiatrist, 2024.