This placebo-controlled within-subject study (n=10) investigated whether LSD (40-80μg/70kg) can induce synesthesia but found that it did not substantially alter the tendency to experience color concurrently in response to sounds and graphemes (letter or number that represents a sound in a word) and that the stimulus-color experiences did not meet accepted criteria for synaesthesia. Results suggest that LSD-induced synaesthesia-like experiences are qualitatively different from inborn/innate synaesthesia.
- Published
- Journal
- Neuropsychologia
- Authors
- Terhune, D. B., Luke, D. P., Kaelen, M., Bolstridge, M., Feilding, A., Nutt, D. J., Carhart-Harris, R. L., Ward, J.