1. Human Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki, Japan;
2. Graduate School of Comprehensive Human Science, University of Tsukuba, Ibaraki, Japan;
3. Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Saitama, Japan;
4. Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, Saitama, Japan;
5. Department of Developmental Physiology, National Institute for Physiological Sciences, Aichi, Japan; and
6. Systems Neuroscience Section, Primate Research Institute, Kyoto University, Aichi, Japan