aEmotion and Pain Laboratory, San Francisco Veterans Affairs Health Care Center, San Francisco, CA

bDepartment of Psychiatry, University of California San Francisco, San Francisco, CA

cSchool of Clinical Dentistry, University of Sheffield, United Kingdom

dSan Diego Veterans Affairs Health Care Center, San Diego, CA

eDepartment of Psychiatry, University of California San Diego, San Diego, CA

fInternational Center for Primate Brain Research, Center for Excellence in Brain Science and Intelligence, Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China

gNathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States

hWerner Reichardt Center for Integrative Neuroscience, Karl Eberhard University of Tübingen, Tübingen, Germany

iMax Planck Institute for Biological Cybernetics, Tübingen, Germany

jDivision of Neurobiology, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden

kDepartment of Physiology, University of Toronto, Toronto, ON, Canada

*Corresponding author. Address: Emotion and Pain Laboratory, San Francisco Veterans Affairs Health Care Center, 4150 Clement Street, San Francisco, CA 94121. Tel.: 415-221-4810. E-mail address: [email protected] (I.A. Strigo).

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