Amygdala task-evoked activity and task-free connectivity independently contribute to feelings of arousal.

ABSTRACT: Individual differences in the intensity of feelings of arousal while viewing emotional pictures have been associated with the magnitude of task-evoked blood-oxygen dependent (BOLD) response in the amygdala. Recently, we reported that individual differences in feelings of arousal are associated with task-free (resting state) connectivity within the salience network. There has not yet been an investigation of whether these two types of functional magnetic resonance imaging (MRI) measures are redundant or independent in their relationships to behavior. Here we tested the hypothesis that a combination of task-evoked amygdala activation and task-free amygdala connectivity within the salience network relate to individual differences in feelings of arousal while viewing of negatively potent image

SUBMITTER: Touroutoglou A 

PROVIDER: S-EPMC4335688 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature