TY - CHAP
T1 - Event-related desynchronization by hand motor imagery is associated with corticospinal excitability
T2 - Physiological evidence for BCI based neurorehabilitation
AU - Takemi, Mitsuaki
AU - Masakado, Yoshihisa
AU - Liu, Meigen
AU - Ushiba, Junichi
N1 - Funding Information:
Acknowledgements. This study resulted from “Brain Machine Interface development” under the Strategic Research Program for Brain Sciences by the Ministry of Education, Culture, Sports, Science and Technology of Japan. The authors thank Ms. Sayoko Ishii and Ms. Sawako Ohtaki for their technical support. Part of this chapter had been reported previously (Takemi et al. 2013a).
Funding Information:
This study resulted from ?Brain Machine Interface develop-ment? under the Strategic Research Program for Brain Sciences by the Ministry of Education, Culture, Sports, Science and Technology of Japan. The authors thank Ms. Sayoko Ishii and Ms. Sawako Ohtaki for their technical support. Part of this chapter had been reported previously (Takemi et al. 2013a).
Publisher Copyright:
© Springer-Verlag Berlin Heidelberg 2014.
PY - 2014
Y1 - 2014
N2 - The purpose of this study was to assess the association between the magnitude of event-related desynchronization (ERD) of electroencephalogram, which is believed to represent increased activation of the sensorimotor cortex, and the excitability of primary motor cortex (M1) and spinal motoneurons. M1 excitability was tested by motor evoked potentials (MEPs), short-interval intracortical inhibition (SICI) and intracortical facilitation (ICF) using transcranial magnetic stimulation, and spinal motoneuronal excitability was tested by F-waves using peripheral nerve stimulation. Results showed that MEP amplitude was significantly increased during motor imagery and large ERD during motor imagery was associated with significantly reduced SICI and increased F-wave persistence, but no significant changes in ICF and the response average of F-wave amplitudes. Our findings suggest that ERD magnitude during motor imagery reflects the instantaneous excitability of both M1 and spinal motoneurons.
AB - The purpose of this study was to assess the association between the magnitude of event-related desynchronization (ERD) of electroencephalogram, which is believed to represent increased activation of the sensorimotor cortex, and the excitability of primary motor cortex (M1) and spinal motoneurons. M1 excitability was tested by motor evoked potentials (MEPs), short-interval intracortical inhibition (SICI) and intracortical facilitation (ICF) using transcranial magnetic stimulation, and spinal motoneuronal excitability was tested by F-waves using peripheral nerve stimulation. Results showed that MEP amplitude was significantly increased during motor imagery and large ERD during motor imagery was associated with significantly reduced SICI and increased F-wave persistence, but no significant changes in ICF and the response average of F-wave amplitudes. Our findings suggest that ERD magnitude during motor imagery reflects the instantaneous excitability of both M1 and spinal motoneurons.
KW - Electroencephalogram
KW - F-wave
KW - Motor evoked potential
KW - Short-interval intracortical inhibition
KW - Transcranial magnetic stimulation
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U2 - 10.1007/978-3-642-54707-2_9
DO - 10.1007/978-3-642-54707-2_9
M3 - Chapter
AN - SCOPUS:85026218461
T3 - Biosystems and Biorobotics
SP - 85
EP - 94
BT - Biosystems and Biorobotics
PB - Springer International Publishing
ER -