Synesthetic hallucinations induced by psychedelic drugs in a congenitally blind man.
Consciousness and cognition April 1, 2018 Sara Dell'Erba, David J Brown, Michael J Proulx 11 citations
A case report describes the experience of a congenitally blind individual, BP, after using LSD. BP reported no visual hallucinations, but instead experienced novel sensory alterations in other functioning senses, consistent with synthetic synesthesia and crossmodal correspondences. The absence of visual hallucinations and the low rates of psychosis observed in the congenitally blind population suggest that acquired visual experiences may be necessary for visual-like hallucinations, and that psychedelic-induced synesthesia can manifest through non-visual modalities.