A human computer interface using SSVEP-based BCI technology

Authors:
Chuan Jia;Honglai Xu;Bo Hong;Xiaorong Gao;Zhiguang Zhang;Shangkai Gao
Affiliations:
Dept. of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China;Dept. of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China;Dept. of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China;Dept. of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China;Dept. of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China;Dept. of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China
Venue:
FAC'07 Proceedings of the 3rd international conference on Foundations of augmented cognition
Year:
2007

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Abstract

To address the issue of system simplicity and subject applicability, a brain controlled HCI system derived from steady state visual evoked potential (SSVEP) based brain computer interface (BCI) is proposed in this paper. Aiming at an external input device for personal computer, key issues of hardware and software design for better performance and user-friendly interface are introduced systematically. With proper parameter customization for each individual, an average information transfer rate of 46bits/min was achieved in the operation of dialing a phone number. With encouraging online performance and advantages of system simplicity, the proposed HCI using SSVEP-based BCI technology is promising for a substitute of standard computer input device for both health and disabled computer users.