1 Institute for Biomedical Science, Shinshu University, Nagano; Department of Neurophysiology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan.
2 Department of Degenerative Neurological Diseases, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo; Department of Neurotherapeutics, Osaka University Graduate School of Medicine, Osaka, Japan.
3 Department of Neurophysiology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan.