Adolescent cognitive control, theta oscillations, and social observation

Area of Science:

• Neuroscience
• Cognitive Science
• Developmental Psychology

Background:

• Theta oscillations (4-8 Hz) are crucial for cognitive control in adults, linking medial-frontal cortex (MFC) activity to conflict/error monitoring and frontal connectivity to control recruitment.
• Prior research has not distinguished theta responses before and after motor actions, nor clarified how medial-lateral connectivity influences distinct control behaviors.
• The role of theta oscillations during adolescence, a period of heightened motivation-control conflict, remains largely unexplored, especially within social contexts.

Purpose of the Study:

• To delineate the distinct roles of theta oscillations in cognitive control subprocesses during adolescence.
• To investigate how theta power and connectivity dynamics differ before and after motor responses.
• To examine the impact of social observation on adolescent theta-based cognitive control mechanisms.

Main Methods:

• Adolescents completed a flanker task in solitary and social observation conditions.
• Electroencephalography (EEG) was used to record theta oscillations (4-8 Hz) over the medial-frontal cortex (MFC).
• Analyses differentiated theta power and connectivity occurring before and after motor responses, linking them to specific cognitive control components.

Main Results:

• Theta power before responses correlated with conflict monitoring, while post-response theta power linked to error monitoring.
• Pre-response MFC connectivity was associated with reactive control, and post-response connectivity with proactive control.
• Social observation selectively enhanced theta measures related to post-response error monitoring and proactive control, but not conflict monitoring or reactive control.

Conclusions:

• Theta oscillations provide a dynamic neural mechanism for distinct cognitive control subprocesses in adolescents.
• The findings differentiate the roles of pre- and post-response theta activity and connectivity in cognitive control.
• Social observation modulates adolescent cognitive control by specifically upregulating error monitoring and proactive control, offering insights into motivation-control interactions during development.