Acquired synaesthesia following 2C-B drug use

Multiple psychedelic drugs, particularly those targeting the serotonin system can elicit experiences, resembling those of developmental synesthesia. Although controversial, drug induced synesthesia can consequentially counter some of the existing theories of synesthesia. The study presents the case of LW who is a 29-year-old-man, experiencing multiple forms of synesthesia including day-color, sound-color, emotion-color, smell-color, and face-color synesthesia, following the ingestion of 70-80mg of 2C-B at the age of 22. LW’s face-color synesthesia is the strongest, particularly when faces convey particular emotional expressions. He perceives color as visuospatial co-localized with inducing faces (projector synesthesia). The study aim was to examine whether LW’s face-color synesthesia met the criteria for automaticity and consistency, which are the main markers of developmental synesthesia. LW and ten non-synesthees completed synesthetic consistency and face-color priming tasks. LW’s...