Dyadic Similarity in Social Value Orientation Modulates Hyper-Brain Network Dynamics During Interpersonal...

Area of Science:

• Neuroscience
• Social Psychology
• Cognitive Science

Background:

• Social value orientation (SVO) is a key determinant of social motivation.
• Interpersonal coordination involves complex behavioral and neural interactions.
• Understanding how SVO influences coordination is crucial for social neuroscience.

Purpose of the Study:

• To investigate the hyper-brain network topological dynamics associated with SVO similarity in interpersonal coordination.
• To examine behavioral and neural differences between prosocial and proself dyads during coordination tasks.
• To identify how brain network efficiency mediates adjustments following negative feedback.

Main Methods:

• Utilized functional near-infrared spectroscopy (fNIRS)-based hyperscanning to measure brain activity in dyads.
• Analyzed hyper-brain functional connectivity and network topology during competitive and cooperative coordination blocks.
• Correlated behavioral performance with neural network characteristics.

Main Results:

• Proself dyads showed higher competitive intensity; prosocial dyads exhibited higher cooperative coordination.
• Distinct hyper-brain functional connectivity and network topological patterns were observed between groups and conditions.
• Right frontopolar global efficiency mediated adjustments to negative feedback in prosocial dyads during cooperation.

Conclusions:

• Dyadic SVO similarity significantly influences interpersonal coordination behaviors and underlying brain network dynamics.
• Specific neural signatures differentiate prosocial and proself interactions during coordinated tasks.
• Brain network efficiency plays a role in adaptive behavioral adjustments in social contexts.