1. Department of Psychology, Justus-Liebig-Universität Giessen, Giessen, Germany
2. Department of Experimental Psychology, University of Oxford, Oxford, UK
3. takuma.morimoto@psy.ox.ac.uk
4. Department of Informatics and Electronics, Yamagata University, Yamagata, Japan
5. yamauchi@yz.yamagata-u.ac.jp
6. Human Media Research Center, Kanagawa Institute of Technology, Atsugi, Japan
7. Department of Information Processing, Tokyo Institute of Technology, Yokohama, Japan
8. uchikawa.k.aa@m.titech.ac.jp