1. Department of Integrative Biology and Physiology (M.J.F., K.M.L., J.G.C., B.A.S.), University of California, Los Angeles, Los Angeles, California 90095
2. University of California, Los Angeles, Laboratory of Neuroendocrinology (M.J.F., B.A.S.), University of California, Los Angeles, Los Angeles, California 90095
3. Department of Life Sciences and Biotechnology (L.F.), University of Ferrara, 44121 Ferrara, Italy
4. Brain Research Institute, University of California, Los Angeles, and Department of Ecology and Evolutionary Biology (B.A.S.), University of California, Los Angeles, Los Angeles, California 90095