Alpha-to-beta- and gamma-band activity reflect predictive coding in affective visual processing.

ABSTRACT: Processing of negative affective pictures typically leads to desynchronization of alpha-to-beta frequencies (ERD) and synchronization of gamma frequencies (ERS). Given that in predictive coding higher frequencies have been associated with prediction errors, while lower frequencies have been linked to expectations, we tested the hypothesis that alpha-to-beta ERD and gamma ERS induced by aversive pictures are associated with expectations and prediction errors, respectively. We recorded EEG while volunteers were involved in a probabilistically cued affective picture task using three different negative valences to produce expectations and prediction errors. Our data show that alpha-to-beta band activity after stimulus presentation was related to the expected valence of the stimulus as predicte

SUBMITTER: Strube A 

PROVIDER: S-EPMC8648824 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature