About the Authors

Hiromitsu Miyata

Affiliation Okanoya Emotional Information Project (OEIP), Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Agency (JST), Nagoya, Japan

Ritsuko Nishimura

Affiliation Okanoya Emotional Information Project (OEIP), Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Agency (JST), Nagoya, Japan

Kazuo Okanoya

Affiliations Okanoya Emotional Information Project (OEIP), Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Agency (JST), Wako, Japan, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan, Brain Science Institute (BSI), RIKEN, Wako, Japan

Nobuyuki Kawai

kawai@is.nagoya-u.ac.jp

Affiliations Okanoya Emotional Information Project (OEIP), Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Agency (JST), Nagoya, Japan, 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: RN KO. Performed the experiments: RN. Analyzed the data: RN HM. Wrote the paper: HM. Arrangement of the study: NK.