Implementation of a beam forming technique in real-time magnetoencephalography.
Real-time magnetoencephalography (rtMEG) is an emerging neurofeedback technology that could potentially benefit multiple areas of basic and clinical neuroscience. In the present study, we implemented voxel-based real-time coherence measurements in a rtMEG system in which we employed a beamformer to localize signal sources in the anatomical space prior to computing imaginary coherence. Our rtMEG experiment showed that a healthy subject could increase coherence between the parietal cortex and visual cortex when attending to a flickering visual stimulus. This finding suggests that our system is suitable for neurofeedback training and can be useful for practical brain-machine interface applications or neurofeedback rehabilitation.
Systems Neuroscience Section, Department of Rehabilitation for Brain Functions, Research Institute of National Rehabilitation Center for Persons with Disabilities, Tokorozawa 359-8555, Japan , Department of Computational Intelligence and Systems Science, Tokyo Institute of Technology, Yokohama 226-8503, Japan.
Hiroki
H
Ora
Kouji
K
Takano
Toshihiro
T
Kawase
Sunao
S
Iwaki
Lauri
L
Parkkonen
Kenji
K
Kansaku
D001921:Brain / Q000502:physiology; D006801:Humans; D015225:Magnetoencephalography / Q000295:instrumentation / Q000379:methods*; D058765:Neurofeedback / Q000295:instrumentation / Q000379:methods*; D012815:Signal Processing, Computer-Assisted