Adolescent Cognitive Control, Theta Oscillations, and Social Motivation

Theta oscillations (4-8 Hz) provide an organizing principle of cognitive control, allowing goal-directed behavior that is conserved across species. In human adults, theta power over medial-frontal cortex (MFC) underlies monitoring, whereas theta synchrony between MFC and lateral-frontal regions reflects control recruitment. Prior work has not separated theta before/after motor responses, nor explained how medial-lateral synchrony drives different kinds of control behaviors. Thetas role during adolescence, a developmental window characterized by a motivation-control mismatch also remains unclear, preventing possible cross-species work. Here, adolescents performed a flanker task alone or under observation to increase social motivation. We separated theta dynamics immediately before/after motor responses, identifying functional dissociations. We also dissociate MFC connectivity with rostral/caudal frontal cortex and distinct forms of behavioral control, which further differed before/after response. Finally, social motivation was found to exclusively upregulate post-response error monitoring and changes in control to prevent future errors, as opposed to pre-response theta dynamics.