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Related Experiment Video

Updated: Jun 26, 2025

How to Calculate and Validate Inter-brain Synchronization in a fNIRS Hyperscanning Study

How to Calculate and Validate Inter-brain Synchronization in a fNIRS Hyperscanning Study

Published on: September 8, 2021

Alpha interbrain synchrony during mediated interpersonal touch.

Wanjoo Park¹, Muhammad Hassan Jamil¹, Mohamad Eid¹

¹Engineering Division, New York University Abu Dhabi, Saadiyat Island, Abu Dhabi, United Arab Emirates.

|May 17, 2024

Summary

This summary is machine-generated.

Mediated interpersonal touch (MIT) technology increases alpha interbrain synchronization, indicating enhanced social coordination during virtual interactions. This study used EEG-based hyperscanning to measure neural synchrony during a palm squeeze task.

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Area of Science:

Neuroscience
Human-Computer Interaction
Social Psychology

Background:

Interpersonal touch is vital for human connection and well-being.
Touch deprivation has negative consequences, leading to interest in mediated interpersonal touch (MIT).
Neural correlates of MIT, particularly interbrain synchrony, remain largely unexplored.

Purpose of the Study:

To investigate the neural effects of MIT on interbrain functional connectivity.
To examine interbrain synchrony during a simulated interpersonal touch task using EEG-based hyperscanning.

Main Methods:

A palm squeeze task was employed to simulate interpersonal touch.
Electroencephalography (EEG)-based hyperscanning was used to record brain activity from interacting participants.
Phase Locking Value (PLV) was calculated to quantify interbrain synchrony.

Main Results:

Mediated interpersonal touch (MIT) significantly increased alpha interbrain synchronization between participants.
A significant difference in alpha PLV was observed during the early interaction phase (130-470 ms) under MIT conditions.
Increased alpha interbrain synchrony suggests enhanced social coordination during MIT.

Conclusions:

MIT can modulate neural processes related to social interaction.
Alpha interbrain synchrony may serve as a neural marker for social coordination in mediated touch.
Findings highlight the potential of MIT to foster connection and social coordination.