Open AccessTemporal dissociation of neural activity underlying synesthetic and perceptual colors
Author(s) -
Lina Teichmann,
Tijl Grootswagers,
Denise Moerel,
Thomas A. Carlson,
Ani. Rich
Publication year - 2021
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.2020434118
Subject(s) - synesthesia , magnetoencephalography , achromatic lens , perception , color vision , psychology , dissociation (chemistry) , cognitive psychology , communication , neuroscience , computer science , artificial intelligence , chemistry , electroencephalography , physics , astronomy
Grapheme-color synesthetes experience color when seeing achromatic symbols. We examined whether similar neural mechanisms underlie color perception and synesthetic colors using magnetoencephalography. Classification models trained on neural activity from viewing colored stimuli could distinguish synesthetic color evoked by achromatic symbols after a delay of ∼100 ms. Our results provide an objective neural signature for synesthetic experience and temporal evidence consistent with higher-level processing in synesthesia.