1. Laboratory of Information Biology (K.I., A.H.T., T.F., T.K., R.O., T.Sa., T.Su., K.U.), Graduate School of Information Sciences, Tohoku University, Sendai 980-8579, Japan
2. Department of Neuroendocrinology (K.I.), Graduate School of Medicine, Tohoku University, Sendai 980-8579, Japan
3. Department of Cellular Neurobiology (M.Y., M.A., R.N., K.S.), Brain Research Institute, Niigata University, Niigata 951-8585, Japan