About the Authors

Tomas Knapen

To whom correspondence should be addressed. E-mail: t.h.j.knapen@phys.uu.nl (TK); r.vanee@phys.uu.nl (RvE)

Affiliation Helmholtz Institute, Utrecht University, Utrecht, The Netherlands

Raymond van Ee

To whom correspondence should be addressed. E-mail: t.h.j.knapen@phys.uu.nl (TK); r.vanee@phys.uu.nl (RvE)

Affiliation Helmholtz Institute, Utrecht University, Utrecht, The Netherlands

Randolph Blake

Affiliation Department of Psychology, Vanderbilt University, Nashville, Tennessee, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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