- Received in May 13, 2016.
- Accepted in December 2, 2016.
- Published print in December 15, 2016.
- 1Netherlands Institute for Neuroscience, 1105 BA Amsterdam, Netherlands
- 2Johns Hopkins University, Baltimore, MD, 21218
- Correspondence should be addressed to Jonathan R. Williford, Netherlands Institute for Neuroscience, Meibergdreef 47, 1105 BA Amsterdam, Netherlands. E-mail: .
Author Contributions: JRW: designed research, performed research, analyzed data, wrote the paper. RVDH: designed research, analyzed data, wrote the paper.
Authors report no conflict of interest.
Office of Naval Research, National Institutes of Health.