About the Authors

Kazuko Shinohara

Affiliation Division of Language and Culture Studies/Institute of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan

Naoto Yamauchi

Affiliations Cooperative Major in Advanced Health Science/Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan, Faculty of Health and Sports Science, Kokushikan University, Tokyo, Japan

Shigeto Kawahara

Affiliation The Institute of Cultural and Linguistic Studies, Keio University, Tokyo, Japan

Hideyuki Tanaka

tanahide@cc.tuat.ac.jp

Affiliation Laboratory of Human Movement Science/Institute of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: KS NY SK HT. Formal analysis: HT. Funding acquisition: NY HT. Investigation: KS NY HT. Methodology: KS NY HT. Project administration: NY KS HT. Resources: NY HT. Supervision: HT. Visualization: NY HT. Writing – original draft: SK HT. Writing – review & editing: KS SK.