About the Authors

Naotaka Fujii

To whom correspondence should be addressed. E-mail: na@brain.riken.jp

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

Sayaka Hihara

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

Atsushi Iriki

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NF AI SH. Performed the experiments: NF SH. Analyzed the data: NF AI SH. Wrote the paper: NF AI.