1. Philosophy Department, Chapman University , California, United States
2. Turner Institute for Brain and Mental Health & School of Psychological Sciences, Faculty of Medicine, Nursing, and Health Sciences, Monash University , Melbourne, Victoria, Australia
3. Center for Information and Neural Networks (CiNet), National Institute of Information and Communications Technology (NICT) , Suita, Osaka 565-0871, Japan
4. Computational Neuroscience Laboratories, Advanced Telecommunications Research Institutes International (ATR) , 2-2-2 Hikaridai, Seika-cho, Soraku-gun, Kyoto 619-0288, Japan