1. Research Fellow, Neuroanesthesia Research, M-004, University of California at San Diego, La Jolla, California, and Department of Anesthesia, University of Naples, First Medical School, Italy.
2. Research Fellow, Neuroanesthesia Research, M-004, University of California at San Diego, La Jolla, California, and Assistant Professor, Department of Anesthesiology, Yamaguchi University, Yamaguchi, Japan.
3. Professor of Anesthesiology and Neurosurgery, Departments of Anesthesiology, Veteran's Administration Medical Center, La Jolla, California, and University of California at San Diego, La Jolla, California.
4. Technical Assistant.