for ash, re: eyelids.tv

“(Steve) Beck applied ‘pulsed stimulation signals’ directly to the eyelid in 1968 to ‘get away from the screen and the image completely’ as he says, ‘and affect images directly from the body itself, much like phosphenes and other eidetic images.’ “

from this book art cinema
it's a good one, 20 bucks on amazon, covers a lot of great stuff, smells and feels good too.