Validating the Use of Emotiv EPOC in Resting EEG Coherence Research
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1
University of New South Wales, Australia
Introduction: Resting electroencephalographic (EEG) coherence provides an index of baseline functional connectivity between regions of the brain and has a variety of important applications in neurocognitive and clinical research. However traditional EEG cap fitting and calibration procedures can be extensive and intimidating especially for child and clinical populations. Alternatively, a portable, wireless and easy-to-fit EEG gaming system (Emotiv EPOC®, www.emotiv.com) has been recently manufactured but not validated for use in resting EEG coherence research. To this end, the present study assessed the equivalence in EEG coherence as recorded by Emotiv EPOC and research-based Compumedics Neuroscan systems.
Method: Sixteen adult participants completed 3 blocks of resting EEG (eyes-closed, eyes-open, eyes-closed) with each recording systems in counterbalanced order across participants. Neuroscan recordings were downsampled to 128Hz to match the Emotiv EPOC recordings, and coherence between 25 electrode pairs were computed for each of the traditional frequency bands (delta, theta, alpha, beta), resting condition, and recording device.
Results: Across participants, the Emotiv EPOC derived coherence values were generally smaller than those from the Neuroscan data, particularly in delta. However, the alpha band coherence values were comparable between the recording devices in the eyes-open condition. Analysis revealed significant correlations between the coherence measures derived from the Emotiv EPOC and Neuroscan recording systems in each assessed band and condition.
Conclusion: The present findings suggest that Emotiv EPOC offers a reasonably valid measure of resting EEG coherence across eyes closed and eyes open conditions. Future endeavors in refining the Emotiv EPOC headset/recording system will be invaluable, especially in its application for use in child and clinical research.
Keywords:
resting EEG,
coherence,
Emotiv,
Neuroscan,
Validation
Conference:
ASP2015 - 25th Annual Conference of the Australasian Society for Psychophysiology, Sydney, Australia, 2 Dec - 4 Dec, 2015.
Presentation Type:
Poster Presentation
Topic:
Psychophysiology
Citation:
Sufani
C,
De Blasio
FM,
McDonald
S and
Rushby
JA
(2015). Validating the Use of Emotiv EPOC in Resting EEG Coherence Research.
Conference Abstract:
ASP2015 - 25th Annual Conference of the Australasian Society for Psychophysiology.
doi: 10.3389/conf.fnhum.2015.219.00013
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Received:
25 Oct 2015;
Published Online:
30 Nov 2015.
*
Correspondence:
Mr. Christopher Sufani, University of New South Wales, Sydney, 2052, Australia, christopher.sufani@gmail.com