Frontal cortex tracks surprise separately for different sensory modalities but engages a common inhibitory control mechanism.

ABSTRACT: The brain constantly generates predictions about the environment to guide action. Unexpected events lead to surprise and can necessitate the modification of ongoing behavior. Surprise can occur for any sensory domain, but it is not clear how these separate surprise signals are integrated to affect motor output. By applying a trial-to-trial Bayesian surprise model to human electroencephalography data recorded during a cross-modal oddball task, we tested whether there are separate predictive models for different sensory modalities (visual, auditory), or whether expectations are integrated across modalities such that surprise in one modality decreases surprise for a subsequent unexpected event in the other modality. We found that while surprise was represented in a common frontal signature ac

SUBMITTER: Wessel JR 

PROVIDER: S-EPMC6687204 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature