A mouthpiece for providing non-invasive neuromodulation to a patient, the mouthpiece including an elongated housing having an anterior region and a posterior region, the elongated housing having a non-planar exterior top surface and internal structural members disposed within the housing, the internal structural members elastically responding to biting forces generated by the patient, a spacer attached to the top surface of the housing for limiting contact between a patient's upper teeth and the exterior top surface of the elongated housing, and a printed circuit board mounted to a bottom portion of the elongated housing, the printed circuit board having a plurality of electrodes for delivering subcutaneous local electrical stimulation to the patient's tongue.