"the ‘dream machine’ is a stroboscopic flicker device that produces visual stimuli.
it was an invention by cult figure brion gysin, writer w. s. burroughs and scientist
ian sommerville in early 1960. rotating at 78 rpm on a phonographic turntable,
the ‘dreamachine’ emits flashes of light reputedly synchronized with alpha rhythms
of the brain which allows one to enter a hypagogic state.” via
william s. burroughs, brion gysin and dream machine
photo charles gatewood, london 1972