About the Authors

David L. Woods

dlwoods@ucdavis.edu

Affiliations Human Cognitive Neurophysiology Laboratory, VANCHCS, 150 Muir Rd., Martinez, CA 95553, United States of America, UC Davis Department of Neurology, 4860 Y St., Suite 3700, Sacramento, CA 95817, United States of America, Center for Neurosciences, UC Davis, 1544 Newton Ct., Davis, CA 95616, United States of America, UC Davis Center for Mind and Brain, 202 Cousteau Place, Suite 201, Davis, CA 95616, United States of America, NeuroBehavioral Systems, Inc., 15 Shattuck Square, Berkeley, CA 94704, United States of America

John M. Wyma

Affiliation Human Cognitive Neurophysiology Laboratory, VANCHCS, 150 Muir Rd., Martinez, CA 95553, United States of America

Timothy J. Herron

Affiliation Human Cognitive Neurophysiology Laboratory, VANCHCS, 150 Muir Rd., Martinez, CA 95553, United States of America

E. William Yund

Affiliation Human Cognitive Neurophysiology Laboratory, VANCHCS, 150 Muir Rd., Martinez, CA 95553, United States of America

Competing Interests

DLW is affiliated with NeuroBehavioral Systems, Inc., the developers of Presentation software that was used to program these experiments. This does not alter the authors' adherence to the data sharing policies of PLOS ONE.

Author Contributions

Conceived and designed the experiments: DLW EWY. Performed the experiments: EWY. Analyzed the data: DLW TJH. Contributed reagents/materials/analysis tools: TJH. Wrote the paper: DLW JMW.