Diencephalic mechanisms of pain sensation

‘Universite Pierre et Marie Curie (Paris VI) and Groupe de Neurobiologie Appliqute, Laboratoire de Physiologie de la Nutrition, C. N. R. 7, 78350 Jouy en Josas (France); 2Department of Psychology, Florida State University, Tallahassee, FL, 32306 (U.S.A.); 3Departments of Anatomy and Anesthesiology and Ahmanson Laboratory of Neurobiology, Brain Research Institute, UCLA Center for the Health Sciences, Los Angeles, CA, 90024 (U.S.A.); “Department of Anatomy, School of Medicine, University of California, San Fransisco, CA, 94143; and *Departments of Physiology and Biophysics and Anatomy, Marine Biomedical Institute, University of Texas Medical Branch, Galveston, TX, 77550 (U.S.A.)