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Correlations between brain electrical activities of two spatially separated human subjects
Jirí Wackermann1, Christian Seiter, Holger Keibel
1Department of Empirical and Analytical Psychophysics, Institute for Frontier Areas of Psychology, Wilhelmstrasse 3a, D-79098 Freiburg i.Br., Germany. jw@igpp.de
Neuroscience Letters
|December 21, 2002
Summary
This study explored brain activity correlations between separated individuals. Unexpectedly, synchronized electroencephalogram (EEG) patterns emerged between a stimulated subject and a non-stimulated subject, suggesting potential brain-to-brain communication.
Area of Science:
- Neuroscience
- Psychology
Background:
- Simultaneous electroencephalogram (EEG) recordings can investigate brain activity.
- Understanding inter-brain communication requires controlled experimental setups.
Purpose of the Study:
- To investigate potential correlations in brain activity between two separated human subjects.
- To determine if brain responses in one subject correlate with brain activity in a non-stimulated, separated subject.
Main Methods:
- Recorded six-channel EEG from pairs of separated human subjects in shielded rooms.
- Elicited brain electric responses to visual stimuli in one subject while the other remained unstimulated.
- Analyzed EEG data by computing signal voltage ratios (Q) at specific latencies.
Main Results:
- Significant departures from baseline EEG distributions were observed in non-stimulated subjects.
- These departures occurred at latencies corresponding to maximum responses in stimulated subjects.
- Indicated potential correlations between the brain activities of separated subjects.
Conclusions:
- Correlations between the brain activities of two separated subjects were detected.
- The findings suggest a possible, yet unexplained, form of inter-brain communication.
- Further research is needed to elucidate the biophysical mechanisms underlying these correlations.