About the Authors

Junko Kanero

Contributed equally to this work with: Junko Kanero, Mutsumi Imai

Affiliation Department of Psychology, Temple University, Philadelphia, Pennsylvania, United States of America

Mutsumi Imai

Contributed equally to this work with: Junko Kanero, Mutsumi Imai

Affiliation Faculty of Environment and Information Studies, Keio University at Shonan-Fujisawa, Endo, Fujisawa, Kanagawa, Japan

Jiro Okuda

Affiliation Department of Intelligent Systems, Faculty of Computer Science and Engineering, Kyoto Sangyo University, Kamigamo-Motoyama, Kita-Ku, Kyoto, Japan

Hiroyuki Okada

Affiliation Department of Mechanical Systems, College of Engineering, Tamagawa University, Machida, Tokyo, Japan

Tetsuya Matsuda

tetsuya@lab.tamagawa.ac.jp

Affiliation Tamagawa University Brain Science Institute, Machida, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist. In Figure 1, the authors present pictures of people walking. This person is the first author of this manuscript.

Author Contributions

Conceived and designed the experiments: JK TM MI JO HO. Performed the experiments: JK TM. Analyzed the data: JK TM. Contributed reagents/materials/analysis tools: JK TM. Wrote the paper: JK TM MI.