Avoidant Responses to Interpersonal Provocation Are Associated with Increased Amygdala and Decreased Mentalizing...

Area of Science:

• Neuroscience
• Social Psychology
• Cognitive Neuroscience

Background:

• Aggression and avoidance are key responses to interpersonal provocation.
• Understanding the neural basis of these decisions is crucial but often studied indirectly.

Purpose of the Study:

• To differentiate brain regions involved in aggressive versus avoidant responses to provocation.
• To investigate neural mechanisms underlying fight-or-flight decisions in a social context.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used in thirty-six healthy women.
• Participants engaged in a competitive reaction time task (fight-or-escape paradigm) against provoking opponents.
• Decisions to fight or avoid, reaction times, and heart rate were recorded.

Main Results:

• Participants avoided highly provoking opponents more often but retaliated when facing them.
• Fighting decisions were linked to increased orbitofrontal cortex and sensorimotor cortex activity.
• Avoidance decisions engaged the mentalizing network and were associated with heightened amygdala activation and reduced activity in mentalizing regions (e.g., IFG, TPJ).

Conclusions:

• Avoidant responses to provocation may stem from threat anticipation and reduced perspective-taking.
• Neural correlates of aggression and avoidance provide insights into decision-making under social threat.
• Findings help reconcile roles of the mentalizing network, amygdala, and orbitofrontal cortex in aggression.