Cross-recurrence quantification analysis captures inter-brain coupling during naturalistic negotiation: a new dynamic...

Area of Science:

• Neuroscience
• Social Cognition
• Dynamical Systems Analysis

Background:

• Naturalistic social interactions exhibit complex, nonlinear coordination across multiple timescales.
• Existing hyperscanning methods often fail to capture these dynamics, relying on passive, stimulus-locked analyses.
• Understanding brain-to-brain coupling in free-flowing interactions is crucial for social neuroscience.

Purpose of the Study:

• To introduce and apply Cross-Recurrence Quantification Analysis (CRQA) for measuring brain-to-brain coupling during naturalistic negotiation.
• To investigate the relationship between neural coupling patterns and objective negotiation behaviors and subjective experiences.
• To compare CRQA with conventional synchrony measures in capturing interaction dynamics.

Main Methods:

• Functional near-infrared spectroscopy (fNIRS) was used to scan dyads during a negotiation task.
• Cross-Recurrence Quantification Analysis (CRQA) was employed to analyze dynamic brain-to-brain coupling.
• Neural coupling in medial prefrontal cortex and temporal parietal junction was assessed.

Main Results:

• CRQA revealed associations between dynamic coupling patterns and successful negotiation, unlike conventional synchrony measures.
• Balanced neural coordination (symmetrical leading/lagging) predicted greater collaborative adjustment and positive social experiences (understanding, cooperation, liking).
• Longer neurocognitive coordination delays correlated with increased motivation, and higher coupling complexity indicated more equitable negotiation.

Conclusions:

• CRQA is a powerful tool for analyzing brain-to-brain coupling in dynamic, naturalistic social interactions.
• The study demonstrates that specific patterns of neural coordination are linked to negotiation outcomes and subjective experiences.
• This approach advances our understanding of how interconnected minds navigate complex social tasks.