Task context load induces reactive cognitive control: An fMRI study on cortical and brain stem activity.

ABSTRACT: Cognitive control is a highly dynamic process that relies on flexible engagement of prefrontal areas and of neuromodulatory systems in order to adapt to changing demands. A range of internal and external factors come into play when individuals engage in a task requiring cognitive control. Here we investigated whether increased working memory (WM) demands would induce a flexible change in cognitive control mode in young healthy individuals. We developed a novel variant of the well-known AX-continuous performance task (AX-CPT). We manipulated the cognitive demands of maintaining task-relevant contextual information and studied the impact of this manipulation on behavior and brain activity. We expected that low WM load would allow for a more effortful, proactive strategy, while high WM load w

SUBMITTER: Maki-Marttunen V 

PROVIDER: S-EPMC6711881 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature