About the Authors
Department of Integrative Medical Biology, Physiology Section, Umeå University, Umeå, Sweden
Umeå Center for Functional Brain Imaging, Umeå University, Umeå, Sweden
Department of Psychology, Umeå University, Umeå, Sweden
The authors have declared that no competing interests exist.
RSJ conceived and designed the experiments. AT, GW, MA, and YO performed the experiments. RSJ, AT, and LN analyzed the data. GW and MA contributed reagents/materials/analysis tools. RSJ and LN wrote the paper.