About the Authors

Roland S Johansson

To whom correspondence should be addressed. E-mail: roland.s.johansson@physiol.umu.se

Affiliations Department of Integrative Medical Biology, Physiology Section, Umeå University, Umeå, Sweden , Umeå Center for Functional Brain Imaging, Umeå University, Umeå, Sweden

Anna Theorin

Affiliation Department of Integrative Medical Biology, Physiology Section, Umeå University, Umeå, Sweden

Göran Westling

Affiliation Department of Integrative Medical Biology, Physiology Section, Umeå University, Umeå, Sweden

Mikael Andersson

Affiliations Department of Integrative Medical Biology, Physiology Section, Umeå University, Umeå, Sweden , Umeå Center for Functional Brain Imaging, Umeå University, Umeå, Sweden

Yukari Ohki

Affiliation Department of Integrative Medical Biology, Physiology Section, Umeå University, Umeå, Sweden

Lars Nyberg

Affiliations Umeå Center for Functional Brain Imaging, Umeå University, Umeå, Sweden , Department of Psychology, Umeå University, Umeå, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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.