Podcast:Altered States Published On: Wed Aug 28 2024 Description: Several years ago, Heather was given three doses of psilocybin as part of a clinical study for treatment-resistant depression. Ever since, she’s been experiencing strange visual distortions, including “visual snow” and shimmering walls. What’s it like to develop a chronic condition following a trip? And what do scientists know about why it happens and who’s at risk?