Original research reported by the author was supported in part by grants NS-02808, NS-15654, and GM-24839 from the National Institutes of Health, and contract DE-AC03-76-SF00012 from the Department of Energy. The 1992 International Conference on the Surgical Treatment of the Epilepsies was supported by NIH conference grant NS-29615 and conference grants from the American Epilepsy Society and the Epilepsy Foundation of America, with additional contributions from Abbott Laboratories, Adtech Medical Instrument Corporation, Biomagnetic Technologies, Inc., Biomedical Monitoring Systems, Inc., Burroughs Wellcome, CIBA-GEIGY Pharmaceutical Corporation, The Coelho Foundation, Dainippon Pharmaceutical, Ltd., DigiTrace Care Services, Inc., Elekta Instruments, Inc., Grass Instrument Company, The Esther A. and Joseph Klingenstein Fund, Inc., Marion Merrell Dow, Inc., NeuroConcepts, Inc., Nihon Kohden America, Inc., Parke-Davis (Division of Warner-Lambert Company), PMT Corporation, Preferred Instruments, Inc., Rhodes Medical Instruments, Stellate Systems, Telefactor Corporation, Wallace Laboratories (Division of Carter Wallace, Inc.), and Wyeth-Ayerst Research.