Target Engagement of the Early Auditory Processing Network by Transcranial Direct Current Stimulation (tDCS)

Subjects will receive tDCS stimulation over the auditory cortex for 20 min. For anodal stimulation the anode electrodes will be placed over the auditory cortex. For cathodal stimulation, the cathode electrodes will be placed over the auditory cortex. For sham stimulation, the anode electrodes will be placed over the auditory cortex and current turned on for 30 sec before being turned off to simulate the sensation of active stimulation.