About the Authors

Gregory Dam

Affiliation Department of Behavioral Sciences, University of Rio Grande, Rio Grande, Ohio, United States of America

Konrad Kording

Affiliation Department of Physical Medicine and Rehabilitation, Rehabilitation Institute of Chicago, Northwestern University, Chicago, Illinois, United States of America

Kunlin Wei


Affiliation Department of Psychology, Key Laboratory of Machine Perception (Ministry of Education), Beijing Engineering Research Center of Intelligent Rehabilitation Engineering, Peking University, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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