Uncoiling the spiral: Maths and hallucinations So common are these geometric hallucinations, that in the last century scientists began asking themselves if they couldn't tell us something fundamental about how our brains are wired up. And it seems that they can. (via MAPS)
posted by kaspen on Feb 16, 2010 - 31 comments

Then, all of sudden, I saw a hand holding a piece of chalk and writing on a black-board something like a mathematical formula. The vision was very clear, but it stayed only for few seconds and disappeared again. The Internet is abound with a new, simple technique for at-home DIY multimodal (vision, sound) Ganzfeld Hallucinations (previously). [more inside]
posted by tybeet on Nov 20, 2008 - 45 comments

The Codex Seraphinianus, a Hallucinatory Encyclopedia, details fantastical beings and impossible places. It's one of the highlights of issue 17 of the Grey Lodge Occult Review, which also includes Maya Deren's very rare film on Haitian Voudoun "Divine Horsemen" [torrent] and William S. Burroughs and Brion Gysin's "The Cut-Ups" [torrent].
posted by moonbird on Jul 11, 2005 - 17 comments