Dynamic Shifts in Large-Scale Brain Network Balance As a Function of Arousal.

ABSTRACT: The ability to temporarily prioritize rapid and vigilant reactions over slower higher-order cognitive functions is essential for adaptive responding to threat. This reprioritization is believed to reflect shifts in resource allocation between large-scale brain networks that support these cognitive functions, including the salience and executive control networks. However, how changes in communication within and between such networks dynamically unfold as a function of threat-related arousal remains unknown. To address this issue, we collected functional MRI data and continuously assessed the heart rate from 120 healthy human adults as they viewed emotionally arousing and ecologically valid cinematographic material. We then developed an analysis method that tracks dynamic changes in large-sc

SUBMITTER: Young CB 

PROVIDER: S-EPMC6596574 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature