1 Graduate School of Information and Computer Science, Chiba Institute of Technology, Narashino, Japan.
2 Department of Computer Science, Chiba Institute of Technology, Narashino, Japan.
3 Research Centre for Mathematical Engineering, Chiba Institute of Technology, Narashino, Japan.
4 Department of Preventive Intervention for Psychiatric Disorders, National Institute of Medicine Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan.
5 Research Centre for Child Mental Development, Kanazawa University, Kanazawa, Japan.
6 Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Yoshida, Japan.