Uncertainty during anticipation modulates neural responses to aversion in human insula and amygdala.

ABSTRACT: Uncertainty about potential negative future outcomes can cause stress and is a central feature of anxiety disorders. The stress and anxiety associated with uncertain situations may lead individuals to overestimate the frequency with which uncertain cues are followed by negative outcomes, an example of covariation bias. Using functional magnetic resonance imaging, we found that uncertainty-related expectations modulated neural responses to aversion. Insula and amygdala responses to aversive pictures were larger after an uncertain cue (that preceded aversive or neutral pictures) than a certain cue (that always preceded aversive pictures). Anticipatory anterior cingulate cortex (ACC) activity elicited by the cues was inversely associated with the insula and amygdala responses to aversive pict

SUBMITTER: Sarinopoulos I 

PROVIDER: S-EPMC2837092 | biostudies-literature | 2010 Apr

REPOSITORIES: biostudies-literature