About the Authors
- Emre Yaksi, Benjamin Judkewitz, Rainer W Friedrich
- Department of Biomedical Optics, Max-Planck-Institute for Medical Research, Heidelberg, Germany
- Rainer W Friedrich
- Friedrich-Miescher-Institute, Basel, Switzerland
The authors have declared that no competing interests exist.
EY performed most of the experiments, with the help of BJ and RWF. RWF conceived the study, constructed equipment, wrote data analysis software, participated in experiments and data analysis, and wrote the manuscript with assistance from EY and BJ.