Investigators propose a safety and feasibility trial for treating epilepsy (Transcranial Magnetic Stimulation for Epilepsy. Principal Investigator: Robert Fisher, MD, PhD, Stanford University). In this approach, the cortical source of epileptic discharges is first localized with dense array electroencephalography (256-channel dEEG). This localization is then registered with neuronavigator software to allow precise targeting with slow (0. 5 Hz) repetitive Transcranial Magnetic Stimulation (rTMS) with the STM9000. The purpose in the feasibility study is to introduce Long Term Depression (LTD) of the seizure onset zone in order to reduce epileptiform discharges. The goal in the future pivotal trial will be to extend this approach to suppress seizures. The funds for this trial are provided by Stanford University. A loan of dEEG equipment and consulting are provided by Electrical Geodesics, Inc. (EGI). EGI seeks FDA's approval for this trial. EGI is the manufacturer of the dEEG system (GES 400) and the US distributor of the EB Neuro STM9000 rTMS system (manufactured in Italy by EB Neuro, S.p.A.).