1. National Institute of Neurological Disorders and Stroke; National Institutes of Health; Rockville Maryland 20892
2. Graduate Program in Neuroscience; University of Arizona; Tucson Arizona 85421
3. University of Pennsylvania; Department of Neurosurgery; Philadelphia PA 19104
4. Biology Department; American University; Washington DC 20016
5. National Institute of Alcoholism and Alcohol Abuse; National Institutes of Health; Rockville Maryland 20892
6. Department of Physiology; Osaka Medical College; Takatsuki Japan 569-8686