EEG correlates of social interaction at distance
22 Pages Posted:
Date Written: March 13, 2020
This study investigated EEG correlates of social interaction at distance
between twenty-five pairs of participants who were not connected by any
traditional channels of communication.
Each session involved the application of 128 stimulations separated by
intervals of random duration ranging from 4 to 6 seconds. One of the pair
received a one-second stimulation from a light signal produced by an
arrangement of red LEDs, and a simultaneous 500 Hz sinusoidal audio signal
of the same length. The other member of the pair sat in an isolated sound-proof
room, such that any sensory interaction between the pair was impossible.
An analysis of the Event-Related Potentials associated with sensory stimulation
using traditional averaging methods showed a distinct peak at approximately
300 ms, but only in the EEG activity of subjects who were directly stimulated.
However, when a new algorithm was applied to the EEG activity based on the
correlation between signals from all active electrodes, a weak but robust
response was also detected in the EEG activity of the passive member of the
pair, particularly within 9 – 10 Hz in the Alpha range. Using the Bootstrap
method and the Monte Carlo emulation, this signal was found to be statistically
Keywords: EEG, P300, Mind to mind communication
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