TY - GEN
T1 - A NIRS-based brain-computer interface system during motor imagery
T2 - 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009
AU - Kanoh, Shin'ichiro
AU - Murayama, Yu Mi
AU - Miyamoto, Ko Ichiro
AU - Yoshinobu, Tatsuo
AU - Kawashima, Ryuta
PY - 2009/12/1
Y1 - 2009/12/1
N2 - A brain-computer interface (BCI) to detect motor imagery from cerebrum hemodynamic data measured by NIRS (near-infrared spectroscopy) was constructed and the effect of the online feedback training for subjects was evaluated. Concentrations of Oxy- and deOxy-hemoglobin in the motor cortex during motor imagery of subject's right hand was measured by 52-channel NIRS system, and the mean magnitude of measured signal near C3 in the International 10-20 System was visually fed back online to the subject. On two out of three subjects, it was shown that the ratio between the averaged value and the standard deviation over trials (S/N ratio) of Oxy-hemoglobin signal elicited by the imagery of subject's right hand was increased by the 5-day online feedback training. Detailed investigation of the effect of the online feedback training on brain activities was left for further study.
AB - A brain-computer interface (BCI) to detect motor imagery from cerebrum hemodynamic data measured by NIRS (near-infrared spectroscopy) was constructed and the effect of the online feedback training for subjects was evaluated. Concentrations of Oxy- and deOxy-hemoglobin in the motor cortex during motor imagery of subject's right hand was measured by 52-channel NIRS system, and the mean magnitude of measured signal near C3 in the International 10-20 System was visually fed back online to the subject. On two out of three subjects, it was shown that the ratio between the averaged value and the standard deviation over trials (S/N ratio) of Oxy-hemoglobin signal elicited by the imagery of subject's right hand was increased by the 5-day online feedback training. Detailed investigation of the effect of the online feedback training on brain activities was left for further study.
UR - http://www.scopus.com/inward/record.url?scp=77951004300&partnerID=8YFLogxK
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U2 - 10.1109/IEMBS.2009.5333710
DO - 10.1109/IEMBS.2009.5333710
M3 - Conference contribution
AN - SCOPUS:77951004300
SN - 9781424432967
T3 - Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009
SP - 594
EP - 597
BT - Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Y2 - 2 September 2009 through 6 September 2009
ER -