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History
- Received September 18, 2014
- Revision received January 1, 2015
- Accepted January 6, 2015
- First published February 25, 2015.
- Version of record published February 25, 2015.
Copyright & Usage
Copyright © 2015 the authors 0270-6474/15/53412-08$15.00/0
Author Information
- 1Department of Economics and Information, Gifu Shotoku University, Gifu 500-8288, Japan,
- 2Center for Information and Neural Networks, National Institute of Information and Communications Technology, Osaka 565-0871, Japan,
- 3Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, Saitama 332-0012, Japan,
- 4Graduate School of Frontier Biosciences, Osaka University, Osaka 565-0871, Japan, and
- 5Brain Science Institute, Tamagawa University, Tokyo 194-8610, Japan
Author contributions
Author contributions: T.N. and M.H. designed research; T.N. and A.I. performed research; T.N. and M.H. analyzed data; T.N. and M.H. wrote the paper.
Disclosures
- Received September 18, 2014.
- Revision received January 1, 2015.
- Accepted January 6, 2015.
This work was supported by Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency (M.H.), a Kakenhi grant from the Ministry of Education in Japan (#22300139; M.H.), Osaka University COI (M.H.), and a grant-in-aid for Japan Society for the Promotion of Science Fellows (T.N.). We thank Peter Dayan for insightful discussion, Peter Karagiannis for editing the manuscript, and Tomoki Haji for technical assistance with the fMRI.
The authors declare no competing financial interests.
- Correspondence should be addressed to either of the following: Masahiko Haruno, Center for Information and Neural Networks, NICT, 1-4 Yamadaoka, Suita, Osaka 565-0871, Japan. mharuno{at}nict.go.jp; or Tsuyoshi Nihonsugi, Department of Economics and Information, Gifu Shotoku University, 1-38 Nakauzura, Gifu-shi, Gifu 500-8288, Japan. t.nihonsugi{at}gmail.com
