Disciplines of Pharmacology (M.R.H., P.M.G.) and Physiology (M.R.H.), School of Medical Science, University of Adelaide, South Australia, Australia; Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado (M.R.H., S.F.M., L.R.W.); Department of Psychology, Hebrew University of Jerusalem, Jerusalem, Israel (Y.S.); and Chemical Biology Research Branch, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland (K.C.R.)

Disciplines of Pharmacology (M.R.H., P.M.G.) and Physiology (M.R.H.), School of Medical Science, University of Adelaide, South Australia, Australia; Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado (M.R.H., S.F.M., L.R.W.); Department of Psychology, Hebrew University of Jerusalem, Jerusalem, Israel (Y.S.); and Chemical Biology Research Branch, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland (K.C.R.)

Disciplines of Pharmacology (M.R.H., P.M.G.) and Physiology (M.R.H.), School of Medical Science, University of Adelaide, South Australia, Australia; Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado (M.R.H., S.F.M., L.R.W.); Department of Psychology, Hebrew University of Jerusalem, Jerusalem, Israel (Y.S.); and Chemical Biology Research Branch, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland (K.C.R.)

Disciplines of Pharmacology (M.R.H., P.M.G.) and Physiology (M.R.H.), School of Medical Science, University of Adelaide, South Australia, Australia; Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado (M.R.H., S.F.M., L.R.W.); Department of Psychology, Hebrew University of Jerusalem, Jerusalem, Israel (Y.S.); and Chemical Biology Research Branch, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland (K.C.R.)

Disciplines of Pharmacology (M.R.H., P.M.G.) and Physiology (M.R.H.), School of Medical Science, University of Adelaide, South Australia, Australia; Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado (M.R.H., S.F.M., L.R.W.); Department of Psychology, Hebrew University of Jerusalem, Jerusalem, Israel (Y.S.); and Chemical Biology Research Branch, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland (K.C.R.)

Disciplines of Pharmacology (M.R.H., P.M.G.) and Physiology (M.R.H.), School of Medical Science, University of Adelaide, South Australia, Australia; Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado (M.R.H., S.F.M., L.R.W.); Department of Psychology, Hebrew University of Jerusalem, Jerusalem, Israel (Y.S.); and Chemical Biology Research Branch, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland (K.C.R.)

Disciplines of Pharmacology (M.R.H., P.M.G.) and Physiology (M.R.H.), School of Medical Science, University of Adelaide, South Australia, Australia; Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado (M.R.H., S.F.M., L.R.W.); Department of Psychology, Hebrew University of Jerusalem, Jerusalem, Israel (Y.S.); and Chemical Biology Research Branch, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland (K.C.R.)