About the Authors

Chihiro Hiramatsu

Current address: Division of Sensory and Cognitive Information, National Institute for Physiological Science, Okazaki, Japan

Affiliation Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan

Amanda D. Melin

Affiliation Department of Anthropology, University of Calgary, Calgary, Alberta, Canada

Filippo Aureli

Affiliation Research Centre in Evolutionary Anthropology and Palaeoecology, School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, United Kingdom

Colleen M. Schaffner

Affiliation Department of Pyschology, University of Chester, Chester, United Kingdom

Misha Vorobyev

Affiliation Department of Optometry and Vision Science, University of Auckland, Auckland, New Zealand

Yoshifumi Matsumoto

Affiliation Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan

Shoji Kawamura

Kawamura@k.u-tokyo.ac.jp

Affiliation Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CH ADM FA CMS SK. Performed the experiments: CH ADM FA CMS YM SK. Analyzed the data: CH ADM FA CMS MV SK. Contributed reagents/materials/analysis tools: SK. Wrote the paper: CH SK.