Being and feeling in sync with an adaptive virtual partner: brain mechanisms underlying dynamic cooperativity

Area of Science:

• Neuroscience
• Cognitive Science
• Social Psychology

Background:

• Cooperation is fundamental to human interaction and achieving shared goals.
• Effective cooperation requires sensing and responding to dynamic interpersonal relationships.
• Understanding the neural basis of dynamic joint action is crucial for explaining cooperative behaviors.

Purpose of the Study:

• To investigate the neural substrates underlying dynamic joint action.
• To examine how varying degrees of partner adaptivity influence brain activity during synchronization.
• To identify the neural mechanisms associated with different levels of entrainment success in cooperative tasks.

Main Methods:

• Utilized functional magnetic resonance imaging (fMRI) to monitor brain activity.
• Employed a novel paradigm with an adaptive pacing signal simulating a virtual partner.
• Manipulated a single parameter to control the virtual partner's adaptivity to participant actions.

Main Results:

• Brain activity patterns differed based on the virtual partner's adaptivity.
• Lower adaptivity (easier synchronization) recruited cortical midline and premotor areas, linking action and socio-affective cooperation.
• Higher adaptivity (more challenging synchronization) engaged right lateral prefrontal cortex, associated with executive control.

Conclusions:

• Neural activity reflects the balance between action and socio-affective processes in cooperation.
• Executive control networks are recruited during challenging cooperative interactions.
• The study elucidates neural mechanisms behind the socio-emotional consequences of entrainment success in joint action.