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J E M Scanlon¹, N S J Jacobsen¹, M C Maack¹

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|March 18, 2022

Summary

Intentional walking synchronization enhances interpersonal coordination. Mobile EEG revealed suppressed alpha-mu and beta rhythms during synchronized gait, suggesting social and motor system engagement.

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Area of Science:

Neuroscience
Human Movement Science
Social Interaction

Background:

Interpersonal behavioral synchrony involves coordinated actions between individuals.
Humans naturally synchronize movements during repetitive tasks like walking.
Mobile electroencephalography (EEG) enables gait analysis during natural movement.

Purpose of the Study:

To investigate interpersonal behavioral synchrony during human gait.
To examine the neural correlates of gait synchronization using mobile EEG.
To compare synchronization under conditions of blocked view, natural walking, and intentional synchrony.

Main Methods:

18 participants walked with an experimenter under three conditions: blocked view, natural, and intentional synchrony.
Foot accelerometers and mobile EEG recorded step behavior and neural activity.
Event-related spectral perturbations (ERSPs) were analyzed across the gait cycle.

Main Results:

Step synchronization was significantly higher in the intentional synchrony condition compared to natural walking.
Alpha-mu and beta rhythms showed suppressed power in specific brain regions during synchronized walking.
No significant differences were found between natural and blocked view conditions.

Conclusions:

Intentional gait synchronization engages brain systems associated with social interaction and motor control.
Neural activity patterns differ between intentional and natural walking synchronization.
Mobile EEG is a viable tool for studying neural aspects of gait synchrony.