TY - GEN
T1 - Enhanced motor imagery based brain-computer interface via unilateral wrist vibrotactile stimulation
AU - Yao, Lin
AU - Shu, Xiaokang
AU - Meng, Jianjun
AU - Zhang, Dingguo
AU - Sheng, Xinjun
AU - Zhu, Xiangyang
PY - 2013
Y1 - 2013
N2 - It is investigated that unilateral sensory stimulation during the motor imagery period might enhance the sensory motor interaction reflected from enhanced sensorimotor rhythm, and the outcomes might be helpful for those with difficulty in producing discriminative rhythmic pattern for successful BCI practice such as hemiplegic stroke patients, amputees and widely existed 'BCI-illiteracy' users. In the present study, subjects were required to perform left and right motor imagery tasks under three different conditions, with nonstimulation in session one, only left stimulation in session two, and only right stimulation in session three. The experiment showed that subject's mental intentions can be still decoded under the sensory stimulation condition, and 4 of the 6 subjects showed a significant increase (p < 0.01) in the right stimulation condition compared to non-stimulation condition. Enhanced cortical activation as reflected from increased ERD (event related desynchronization) strength was presented in the sensory stimulation condition among majority of the subjects, whilst some subjects showed that the ERD strength was stronger when stimulation, motor imagery were on the same side compared to the different side. It is suggested that the proposed experimental paradigm can be used as a good intervention for those 'BCI-illiteracy' people and enhance the sensory motor interaction process for rehabilitation of those with motor impairment.
AB - It is investigated that unilateral sensory stimulation during the motor imagery period might enhance the sensory motor interaction reflected from enhanced sensorimotor rhythm, and the outcomes might be helpful for those with difficulty in producing discriminative rhythmic pattern for successful BCI practice such as hemiplegic stroke patients, amputees and widely existed 'BCI-illiteracy' users. In the present study, subjects were required to perform left and right motor imagery tasks under three different conditions, with nonstimulation in session one, only left stimulation in session two, and only right stimulation in session three. The experiment showed that subject's mental intentions can be still decoded under the sensory stimulation condition, and 4 of the 6 subjects showed a significant increase (p < 0.01) in the right stimulation condition compared to non-stimulation condition. Enhanced cortical activation as reflected from increased ERD (event related desynchronization) strength was presented in the sensory stimulation condition among majority of the subjects, whilst some subjects showed that the ERD strength was stronger when stimulation, motor imagery were on the same side compared to the different side. It is suggested that the proposed experimental paradigm can be used as a good intervention for those 'BCI-illiteracy' people and enhance the sensory motor interaction process for rehabilitation of those with motor impairment.
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U2 - 10.1109/NER.2013.6695863
DO - 10.1109/NER.2013.6695863
M3 - Conference contribution
AN - SCOPUS:84897721789
SN - 9781467319690
T3 - International IEEE/EMBS Conference on Neural Engineering, NER
SP - 29
EP - 32
BT - 2013 6th International IEEE EMBS Conference on Neural Engineering, NER 2013
T2 - 2013 6th International IEEE EMBS Conference on Neural Engineering, NER 2013
Y2 - 6 November 2013 through 8 November 2013
ER -
