1 Laboratory of Exercise Biochemistry and Neuroendocrinology, Faculty of Health and Sport Sciences, University of Tsukuba, 305-8574 Ibaraki, Japan.
2 Sports Neuroscience Division, Advanced Research Initiative for Human High Performance (ARIHHP), Faculty of Health and Sport Sciences, University of Tsukuba, 305-8574 Ibaraki, Japan.
3 Department of Neurobiology and Behavior, University of California, Irvine, CA 92697.
4 Center for the Neurobiology of Learning and Memory, University of California, Irvine, CA 92697.
5 Center for Cybernics Research, University of Tsukuba, 305-8574 Ibaraki, Japan.
6 Department of Neurology, Ibaraki Prefectural University of Health Sciences, 300-0394 Ibaraki, Japan.
7 Sports Neuroscience Division, Advanced Research Initiative for Human High Performance (ARIHHP), Faculty of Health and Sport Sciences, University of Tsukuba, 305-8574 Ibaraki, Japan; myassa@uci.edu soya.hideaki.gt@u.tsukuba.ac.jp.
8 Laboratory of Exercise Biochemistry and Neuroendocrinology, Faculty of Health and Sport Sciences, University of Tsukuba, 305-8574 Ibaraki, Japan; myassa@uci.edu soya.hideaki.gt@u.tsukuba.ac.jp.