About the Authors
Computation and Neural Systems, California Institute of Technology, Pasadena, California, United States of America
Department of Radiology, CHUV and University of Lausanne, Lausanne, Switzerland
The authors have declared that no competing interests exist.
Conceived and designed the experiments: MdA PB. Performed the experiments: MdA EF. Analyzed the data: MdA EF PB. Wrote the paper: MdA PB.