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Increased or decreased? Interpersonal neural synchronization in group creation.

Zheng Liang1, Songqing Li2, Siyuan Zhou3

  • 1Key Laboratory of Adolescent Cyberpsychology and Behavior (CCNU), Ministry of Education, Central China Normal University, Wuhan, China; Key Laboratory of Human Development and Mental Health of Hubei Province, School of Psychology, Central China Normal University, Wuhan, China.

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Summary

Group creation involves understanding novel ideas, which shows reduced interpersonal neural synchronization (INS) between collaborators. Better integration of views enhances group performance by improving collective understanding and goals.

Keywords:
Group creationHyperscanningInterpersonal neural synchronizationfNIRS

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Area of Science:

  • Cognitive Neuroscience
  • Social Neuroscience
  • Neuroscience of Creativity

Background:

  • Group creation, crucial for innovation, involves idea generation and evaluation.
  • The underlying interpersonal neural mechanisms during natural communication are not well understood.
  • Role asymmetry within groups may influence interpersonal neural patterns.

Purpose of the Study:

  • To investigate the interpersonal neural mechanisms of group creation during natural communication.
  • To examine neural activity synchronization between collaborators in creative versus control tasks.
  • To explore the relationship between interpersonal neural synchronization and group performance metrics.

Main Methods:

  • Utilized functional near-infrared spectroscopy (fNIRS) to record neural activity in left prefrontal (lPFC) and right temporal-parietal junction (rTPJ) regions.
  • Compared neural activity during a creative Product Improvement Task with a control Item Purchase Plan Task in same-sex dyads.
  • Identified leaders and followers based on task performance to analyze role-specific neural patterns.

Main Results:

  • Creative tasks showed significantly lower interpersonal neural synchronization (INS) in specific brain regions compared to control tasks.
  • Leader-to-follower influence was stronger and bidirectional, unlike the control condition.
  • INS correlated positively with novelty and appropriateness, and negatively with conflict during creative tasks.

Conclusions:

  • Group creation, particularly idea generation and evaluation, exhibits reduced neural coupling, possibly due to the complexity of novel ideas.
  • Enhanced group performance is linked to improved integration of diverse viewpoints and shared goals.
  • Distinct temporal dynamics of INS exist for novelty and appropriateness during group creation, revealing unique neural patterns.