About the Authors

Maori Kobayashi

te11001@meiji.ac.jp

Affiliation Department of Science and Technology, Meiji University, Kawasaki, Kanagawa, Japan

Makio Kashino

Affiliations NTT Communication Science Laboratories, NTT Corporation, Atsugi, Kanagawa, Japan, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: M. Kobayashi M. Kashino. Performed the experiments: M. Kobayashi. Analyzed the data: M. Kobayashi M. Kashino. Contributed reagents/materials/analysis tools: M. Kobayashi M. Kashino. Wrote the paper: M. Kobayashi M. Kashino.