Epilepsy has afflicted humankind throughout recorded history; yet, it is only in the last half-century, that significant progress has been made in our basic understanding of the epileptic brain. Pivotal advances in drug development and surgical techniques, as well as the emergence of innovative approaches such as electrical stimulation of the nervous system, have led to a substantial reduction in the morbidity and mortality of patients with epilepsy. At the same time, remarkable developments in neuroscience have enhanced our understanding of brain structure and function.