About the Authors
Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel
Department of Psychology, Institute for Systems Research and Neuroscience and Cognitive Science Program, University of Maryland, College Park, Maryland, United States of America
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: YY BF CM NU. Performed the experiments: YY BF. Analyzed the data: YY. Contributed reagents/materials/analysis tools: YY BF CM NU. Wrote the paper: YY NU.