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Are the kinds of abnormal cross-modal interactions seen in synaesthesia or following brain damage due to hyperconnectivity between or within brain areas, or are they a result of lack of inhibition? This question is highly contested. Here we show that posthypnotic suggestion induces abnormal cross-modal experience similar to that observed in congenital grapheme-color synaesthesia. Given the short time frame of the experiment, it is unlikely that new cortical connections were established, so we conclude that synaesthesia can result from disinhibition between brain areas.

Original publication

DOI

10.1111/j.1467-9280.2009.02286.x

Type

Journal article

Journal

Psychol Sci

Publication Date

02/2009

Volume

20

Pages

258 - 265

Keywords

Color Perception, Female, Humans, Male, Nerve Net, Neural Inhibition, Neurons, Perceptual Disorders, Visual Perception, Young Adult