1. Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan.
2. Japan Society for the Promotion of Science, Tokyo, Japan.
3. Section on Functional Imaging Methods, National Institute of Mental Health, Bethesda, MD, USA.
4. Scientific and Statistical Computing Core, National Institute of Mental Health, Bethesda, MD, USA.
5. Functional MRI Core Facility, National Institute of Mental Health, Bethesda, MD, USA.