About the Authors
- Nobuo Masataka
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* E-mail: masataka@pri.kyoto-u.ac.jp
Affiliation Primate Research Institute, Kyoto University, Inuyama, Japan
- Sachiko Hayakawa
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Affiliation Primate Research Institute, Kyoto University, Inuyama, Japan
- Nobuyuki Kawai
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Affiliation Graduate School of Information Science, Nagoya University, Nagoya, Japan
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: NM. Performed the experiments: SH NK. Analyzed the data: SH. Contributed reagents/materials/analysis tools: SH. Wrote the paper: NM.