The low-cost implement of a phase coding SSVEP-based BCI system

Kuo Kai Shyu, Po Lei Lee, Ming Huan Lee, Yun Jen Chiu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

This paper uses the phase feature of steady-state visual evoked potential (SSVEP) to implement a brain-computer interface (BCI) system. The proposed system composes with a LED stimulation panel, a biomedical signal processed circuit, and an field-programmable gate array (FPGA)-based real-time signal processor. This design is different from the other BCI systems, which uses expensive electroencephalography (EEG) measurement equipment, personal computer, and commercial real-time signal-processing software. Besides, the proposed design uses phase feature to instead of frequency feature of SSVEP signal. The proposed system allows that users can use their brainwave to connect with external world by themselves. Implementing a prototype of the FPGA-based SSVEP BCI system verifies the effectiveness of the proposed system. The proposed system has reached an average transfer rate about 24.67 bits/min for normal subjects. Experimental results show that the subjects' SSVEP can successfully use the proposed BCI system with high identification accuracy.

Original languageEnglish
Title of host publication2010 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2010 - Proceedings
Pages559-562
Number of pages4
DOIs
StatePublished - 2010
Event2010 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2010 - Athens, Greece
Duration: 12 Dec 201015 Dec 2010

Publication series

Name2010 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2010 - Proceedings

Conference

Conference2010 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2010
Country/TerritoryGreece
CityAthens
Period12/12/1015/12/10

Keywords

  • Brain-computer interface (BCI)
  • Field-programmable gate array (FPGA)
  • Steady-state visual-evoked potential (SSVEP)

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