JACIII Vol.21 No.7 pp. 1312-1320
doi: 10.20965/jaciii.2017.p1312


Majority Rule Using Collaborative P300 by Auditory Stimulation

Kosuke Fujita and Hideaki Touyama

Department of Information Systems Engineering, Faculty of Engineering, Toyama Prefectural University
Imizu-City, Toyama 939-0398, Japan

April 20, 2017
October 11, 2017
November 20, 2017
collaborative EEG, P300, majority rule, auditory stimulus, attention, normalization, multimedia evaluation

In this study, a new method to realize majority rule is presented by using noninvasive brain activities. With the majority rule based on an electroencephalogram (EEG), a technique to determine the attention of multiple users is proposed. In general, a single-shot EEG ensures short-time response, but it is inevitably deteriorated by artifacts. To enhance the accuracy of the majority rule, the collaborative signals of P300 evoked potentials are focused. The collaborative P300 signal is prepared by averaging individual single-shot P300 signals among subjects. In experiments, the EEG signals of twelve volunteers were collected by using auditory stimuli. The subjects paid attention to target stimuli and no attention to standard stimuli. The collaborative P300 signal was used to evaluate the performance of the majority rule. The proposed algorithm enables us to estimate the degree of attention of the group. The classification is based on supervised machine learning, and the accuracy approximately 80%. The applications of this novel technique in multimedia content evaluations as well as neuromarketing and computer-supported co-operative work are discussed.

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Last updated on Dec. 12, 2017