**Acknowledgements**

I am grateful to Drs. Shigeo Katoh, Tomohisa Katsuda and Takako Yasuda. The study on BSIS was cooperatively performed with them, when they were a Professor, Assistant Professor and doctoral student, respectively, at Kobe University. I also thank the graduate students in Prof. Katoh's laboratory at Kobe University and the students in my laboratory at Kobe College. The research was supported by grants-in-aids from the Central Laboratory and the School of Human Sciences at Kobe College.
