Closed-loop System Using Transcranial Direct Current Stimulation (tDCS) for Epilepsy

"For both active and sham tDCS, the device will be hooked up to the closed loop system, using electrodes of 35cm\^2. During active tDCS, the subject will receive 2mA for 5 min. During sham tDCS, the current will only be active for 30 seconds (current ramping up and then down) to simulate the sensations of active tDCS.~The subject will undergo either active or sham stimulation for their first 24-hour EEG monitoring visit, and the opposite intervention on the second 24-hour EEG monitoring visit."