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Related Experiment Video

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Successful Public Speaking Enhances Neural Alignment in Audience Language Networks.

Xuanxuan Zhang1,2,3, Bolong Wang1,2,3, Linmiao Zhang2

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More engaging public speeches increase neural synchronization between audience members, particularly in brain networks for language and theory of mind. This suggests shared brain activity underlies effective communication.

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brain synchronizationfunctional MRIintersubject correlationlanguage networkpublic speaking

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Communication Studies

Background:

  • Understanding the neural basis of audience engagement in public speaking is crucial but poorly understood.
  • The specific brain networks and neurobiological processes driving audience engagement fluctuations require investigation.

Purpose of the Study:

  • To investigate how varying levels of audience engagement in public speeches influence neural activity.
  • To identify functional brain networks supporting dynamic audience engagement.
  • To explore neurobiological underpinnings of shared audience experiences.

Main Methods:

  • Utilized naturalistic functional magnetic resonance imaging (fMRI).
  • Employed intersubject correlation (ISC) analysis to measure neural synchronization.
  • Analyzed carefully selected speeches with differing engagement levels and temporal fluctuations.

Main Results:

  • Highly engaging speeches led to significantly greater interbrain neural synchronization (ISC) across numerous brain regions.
  • Engagement-related synchronization was most pronounced in language processing and theory of mind networks.
  • Sliding-window analysis revealed dynamic temporal fluctuations in interbrain synchronization.

Conclusions:

  • Neural synchronization, particularly in language and theory of mind networks, is a key indicator of audience engagement.
  • Trans-synaptic signaling pathways may modulate interbrain synchronization, linking intrabrain communication to shared experiences.
  • This research provides a framework for studying audience neural synchronization, with implications for education and leadership.