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Dual EEG alignment between participants during shared intentionality experiments.

Mark H Myers1, Gahangir Hossain2

  • 1Department of Anatomy and Neurobiology, University of Tennessee Health Sciences Center, Memphis, TN, United States.

Brain Research
|June 17, 2022
PubMed
Summary
This summary is machine-generated.

Synchronized brain activity, measured via electroencephalography (EEG), was detected between two individuals performing similar tasks. These findings reveal temporal patterns in the alpha-beta frequency range, suggesting shared cognitive processes.

Keywords:
Amplitude modulation (AM)Cross spectral coherenceMaximal information coefficient (MIC) analysisMaximum asymmetry score (MAS)Shared intentionalitySocial Neuroscience

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Signal Processing

Background:

  • Electroencephalography (EEG) analysis in humans shows beta oscillations carry perceptual information.
  • Amplitude and phase modulation of beta oscillations occur during task-oriented activities.
  • Previous research highlights the role of neural oscillations in cognitive functions.

Purpose of the Study:

  • To test the hypothesis that synchronized patterns exist in scalp EEG between two individuals engaged in similar intentional activities.
  • To investigate inter-brain synchronization during coordinated cognitive tasks.
  • To explore the potential of EEG for understanding shared neural dynamics.

Main Methods:

  • Scalp EEG signals were recorded from human subjects performing similar tasks.
  • Signals were band-pass filtered, and the Hilbert transform was used to extract phase and amplitude.
  • A systematic search across EEG frequency spectrum (alpha, beta, delta, gamma, theta) identified temporal patterns.

Main Results:

  • Temporal synchronization patterns were identified in the alpha-beta frequency range (15-30 Hz).
  • Amplitude and phase modulation patterns were classified relative to task intervals.
  • Evidence suggests synchronized brain activity between individuals engaged in similar tasks.

Conclusions:

  • Scalp EEG can provide insights into the timing of episodically synchronized brain activity between individuals.
  • Findings support the existence of inter-brain synchronization during shared cognitive tasks.
  • This research opens avenues for studying higher cognitive functions through coupled neural dynamics.