About the Authors
Unit on Neuroplasticity, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JSS HAC. Performed the experiments: JSS SF. Analyzed the data: JSS SF. Contributed reagents/materials/analysis tools: HAC. Wrote the paper: JSS HAC.