About the Authors

Andrew S. Fox

Affiliations Department of Psychology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America, The Waisman Laboratory for Brain Imaging and Behavior, University of Wisconsin-Madison, Madison, Wisconsin, United States of America

Steven E. Shelton

Affiliation Department of Psychiatry, University of Wisconsin-Madison, Madison, Wisconsin, United States of America

Terrence R. Oakes

Affiliation The Waisman Laboratory for Brain Imaging and Behavior, University of Wisconsin-Madison, Madison, Wisconsin, United States of America

Richard J. Davidson

Affiliations Department of Psychology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America, Department of Psychiatry, University of Wisconsin-Madison, Madison, Wisconsin, United States of America, The Waisman Laboratory for Brain Imaging and Behavior, University of Wisconsin-Madison, Madison, Wisconsin, United States of America

Ned H. Kalin

nkalin@wisc.edu

Affiliations Department of Psychology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America, Department of Psychiatry, University of Wisconsin-Madison, Madison, Wisconsin, United States of America, The Waisman Laboratory for Brain Imaging and Behavior, University of Wisconsin-Madison, Madison, Wisconsin, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NK SS. Performed the experiments: SS. Analyzed the data: RD TO AF NK. Contributed reagents/materials/analysis tools: TO AF NK. Wrote the paper: RD TO AF NK.