About the Authors

Kazuo Okanoya

Affiliation Laboratory for Biolinguistics, Brain Science Institute, RIKEN, Saitama, Japan

Naoko Tokimoto

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

Noriko Kumazawa

Affiliation Laboratory for Symbolic Cognitive Development, Brain Science Institute, RIKEN, Saitama, Japan

Sayaka Hihara

Affiliation Laboratory for Symbolic Cognitive Development, Brain Science Institute, RIKEN, Saitama, Japan

Atsushi Iriki

iriki@brain.riken.jp

Affiliation Laboratory for Symbolic Cognitive Development, Brain Science Institute, RIKEN, Saitama, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AI KO NK NT. Performed the experiments: NK NT. Analyzed the data: NK NT. Contributed reagents/materials/analysis tools: SH NK NT. Wrote the paper: AI KO NK NT.