Brain waves as biometrics in relaxed and mentally tasked conditions with eyes closed

Authors:
Isao Nakanishi;Chisei Miyamoto;Shigang Li
Affiliations:
Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552, Japan;Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552, Japan;Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552, Japan
Venue:
International Journal of Biometrics
Year:
2012

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Abstract

In this study, we investigate the practical application of brain wave biometrics to operator authentication of a system where the operator wears a brain wave sensor, and is authenticated while using the system. The verification performance is examined for subjects under the eye-closed and relaxed condition, and the eye-closed and mentally tasked condition. In the latter case, we assume biometric verification of computer users, and we adopt a mental task that we call mental composition. In addition, this application is made more practical by using an electroencephalograph that has a single electrode. Further, we propose simple feature extraction and verification based on spectral information. Our experiments on a set of approximately 20 subjects yield an equal error rate (EER) of approximately 15%.