About the Authors

Roland Schäfer

Affiliation Department of Physiology, University of Bern, Bern, Switzerland

Eleni Vasilaki

Affiliation Department of Physiology, University of Bern, Bern, Switzerland

Walter Senn

To whom correspondence should be addressed. E-mail: senn@pyl.unibe.ch

Affiliation Department of Physiology, University of Bern, Bern, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

RS and WS conceived and designed the experiments and wrote the paper. RS performed the experiments. All authors analyzed the data. EV and WS contributed reagents/materials/analysis tools. EV supported programming and debugging.