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access icon free Biometric identification using single channel EEG during relaxed resting state

© The Institution of Engineering and Technology
Received 28/07/2017, Accepted 03/10/2017, Revised 19/09/2017, Published 10/10/2017

Brain signals have long been studied within various fields like medical, physiotherapy, and neurology for many years. One of the main reasons for this interest is to better understand brain diseases like Parkinson's, Schizophrenia, Alzheimer's, epilepsy, spinal cord injuries, and stroke among others. More recently, they have been used in brain–computer interface systems for rehabilitation, entertainment, and assistance applications. Even with the growing interest in clinical applications, the scientific community has only recently investigated the possibility of using brain signals as a potential biometric feature that can be used in people authentication and recognition systems. In this research, the authors have studied the use of brain signals acquired using electroencephalogram (EEG) during both eyes open and eyes closed states for identification based on a large dataset of 109 subjects. The use of a novel mind relaxation metric to determine the optimum epochs to select for the classification and verification has generated very high classification results, in the range of 97–99% based on a single channel. The approach has also been validated against another dataset to verify its consistency and repeatability. The results demonstrate that it is possible to move towards a single-channel biometric identification system with a very high level of reliability and accuracy.

Inspec keywords: feature extraction; brain-computer interfaces; electroencephalography; signal classification; biometrics (access control); diseases

Other keywords: people authentication; brain-computer interface; biometric feature; mind relaxation metric; brain diseases; relaxed resting state; eyes closed states; classification; scientific community; electroencephalogram; single-channel biometric identification system; single channel EEG; clinical applications; eyes open state; people recognition systems; brain signals

Subjects: Signal processing and detection; Data security; Electrodiagnostics and other electrical measurement techniques; Bioelectric signals; Digital signal processing

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