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History
- Received November 11, 2013
- Revision received February 22, 2014
- Accepted March 20, 2014
- First published April 30, 2014.
- Version of record published April 30, 2014.
Copyright & Usage
Copyright © 2014 the authors 0270-6474/14/346156-08$15.00/0 This article is freely available online through the J Neurosci Author Open Choice option.
Author Information
Author contributions
Author contributions: A.L.P., Ö.d.M., and F.U. designed research; A.L.P. and Ö.d.M. performed research; A.L.P., Ö.d.M., P.F., H.E., and F.U. analyzed data; F.U. wrote the paper.
Disclosures
- Received November 11, 2013.
- Revision received February 22, 2014.
- Accepted March 20, 2014.
This work was supported by the Foundation for Science and Technology (Grabt SFRH/BD/33895/2009), the Swedish Research Council (Grant 521-2010-3195), and the Sven and Dagmar Salén Foundation. We thank Jonathan Berrebi for technical support and comments on the manuscript, László Harmat and Diana Muessgens for assistance during experiments, and Miguel Castelo-Branco for valuable discussions.
The authors declare no competing financial interests.
- Correspondence should be addressed to Fredrik Ullen, Department of Neuroscience, Retzius v. 8, Karolinska Institutet, SE-171 77 Stockholm, Sweden. Fredrik.Ullen{at}ki.se
