TY - GEN
T1 - Simultaneous detection method of P300 event-related potentials and eye gaze point using multi-pseudorandom and flash stimulation for brain computer interface
AU - Momose, Keiko
PY - 2008
Y1 - 2008
N2 - A method for simultaneous detecting of P300 response and eye gaze point using visual evoked potentials (VEPs) elicited by multi-pseudorandom and flash stimuli was examined. Prototype system which would be a practical brain computer interface is established and evaluated. Visual stimuli consisted of six small squares (visual angle of 0.7 × 0.7 deg) surrounded by frames/a frame (2 × 2 deg). Squares were flashed with an interval of 180 ms to elicit event-related potential of P300, and luminance of each frame was modulated, based on pseudorandom binary sequences (PRBS) of 10.23 seconds. Six visual stimuli were simultaneously presented on the monitor and subjects were instructed to focus attention successively on an appointed square and EEG was recorded during this task. The cross correlation functions (kernels) of EEGs and each PRBS were calculated and used to determine the subject gazed target. Clear P300 and kernel response for target were simultaneously detected, indicating that this technique could be useful as a practical brain computer interface system.
AB - A method for simultaneous detecting of P300 response and eye gaze point using visual evoked potentials (VEPs) elicited by multi-pseudorandom and flash stimuli was examined. Prototype system which would be a practical brain computer interface is established and evaluated. Visual stimuli consisted of six small squares (visual angle of 0.7 × 0.7 deg) surrounded by frames/a frame (2 × 2 deg). Squares were flashed with an interval of 180 ms to elicit event-related potential of P300, and luminance of each frame was modulated, based on pseudorandom binary sequences (PRBS) of 10.23 seconds. Six visual stimuli were simultaneously presented on the monitor and subjects were instructed to focus attention successively on an appointed square and EEG was recorded during this task. The cross correlation functions (kernels) of EEGs and each PRBS were calculated and used to determine the subject gazed target. Clear P300 and kernel response for target were simultaneously detected, indicating that this technique could be useful as a practical brain computer interface system.
UR - http://www.scopus.com/inward/record.url?scp=61849150954&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=61849150954&partnerID=8YFLogxK
U2 - 10.1109/iembs.2008.4649240
DO - 10.1109/iembs.2008.4649240
M3 - Conference contribution
C2 - 19162743
AN - SCOPUS:61849150954
SN - 9781424418152
T3 - Proceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08 - "Personalized Healthcare through Technology"
SP - 666
EP - 669
BT - Proceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08
PB - IEEE Computer Society
T2 - 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08
Y2 - 20 August 2008 through 25 August 2008
ER -