About the Authors

Randolf Menzel

menzel@neurobiologie.fu-berlin.de

Affiliation Institute Biology, Neurobiology, Freie Universität Berlin, Berlin, Germany

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RM. Performed the experiments: RM. Analyzed the data: RM. Contributed reagents/materials/analysis tools: RM. Wrote the paper: RM.