Currently there are 3 epilepsy surgery programs in Taiwan, Taipei �Veterans General Hospital �or adults and children from 1987, �Lin�kou Cheng Gung �emorial Hospital �from 1988, and Hualien Tzu Chi �Medical Center �from 2��002��. To date, more than 8�00 patients ha�ve �been operated, including lesionectomy, callosotomy, hemispherectomy, deep brain stimulation and vagus nerve stimulation. The development of epilepsy surgery service was attributed to establishment of Taiwan Epilepsy Society in 1990, and availability of various modern techniques to determine the lesions, epileptogenic foci and cortical function.