About the Authors

Eiji Matsunaga

Eiji.Matsunaga@brain.riken.jp (EM); kazuookanoya@gmail.com (KO)

Affiliations Laboratory for Biolinguistics, RIKEN Brain Science Institute, Wako, Japan, Laboratory for Symbolic Cognitive Development, RIKEN Brain Science Institute, Wako, Japan

Kenta Suzuki

Affiliations Laboratory for Biolinguistics, RIKEN Brain Science Institute, Wako, Japan, ERATO Okanoya Emotional Information Project, JST-ERATO, Saitama, Japan, Graduate School of Science and Engineering, Saitama University, Saitama, Japan, Emotional Information Joint Research Laboratory, RIKEN Brain Science Institute, Wako, Japan

Shigeki Kato

Affiliation Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University, Fukushima, Japan

Tohru Kurotani

Affiliation ERATO Okanoya Emotional Information Project, JST-ERATO, Saitama, Japan

Kazuto Kobayashi

Affiliation Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University, Fukushima, Japan

Kazuo Okanoya

Eiji.Matsunaga@brain.riken.jp (EM); kazuookanoya@gmail.com (KO)

Affiliations Laboratory for Biolinguistics, RIKEN Brain Science Institute, Wako, Japan, ERATO Okanoya Emotional Information Project, JST-ERATO, Saitama, Japan, Department of Life Sciences, Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan, Emotional Information Joint Research Laboratory, RIKEN Brain Science Institute, Wako, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EM. Performed the experiments: EM. Analyzed the data: EM KS. Contributed reagents/materials/analysis tools: SK KK. Wrote the paper: EM KS TK KO.