An oral appliance for use with a subject in his/her mouth includes a flexible tube having an input end and an output end and an electrode coupled to the flexible tube adjacent the output end. The flexible tube is adapted to be positioned in the subject's oral cavity with the output end positioned in a posterior region of the oral cavity. The electrode is adapted and configured to administer an electrical stimulation to the posterior region of the oral cavity. An electrode lead is disposed within the flexible tube and connected to the electrode. An electrical stimulation control unit is connected to the electrode lead. A method of administering an electrical stimulation to a posterior region of an oral cavity of a subject is also provided.