Use of the BrainPort® Balance Device to Improve Balance in Adults With Balance Deficits Due to Stroke

Inclusion Criteria: * At least 18 years old. * Diagnosis of stroke for at least 6 months. * Reached a plateau and been discharged from physical therapy. * Able to ambulate with or without assistance. * Ongoing balance problem. * Able to read and understand the informed consent form, and willing to sign the informed consent form. Exclusion Criteria: * Current oral health problems as determined by health questionnaire and an examination of the oral cavity. * Any medical condition that would interfere with performance on the assessments. * History of seizures. * Pregnancy. * Cognitive deficits (Mini-Mental 25 or below), joint replacements, cervical vertigo, or major neurologic disease, major depression or disabling psychiatric disorder. * Known neuropathies of tongue or skin tactile system. * Prior exposure to BrainPort® balance device. * Subjects who are unwilling or unable to adhere to all study requirements, including completion of the training period, evaluation tests, and return to clinic for a follow-up visit. * Subjects who have undergone middle ear or other surgery with sacrifice or damage to the chorda tympani nerve, lingual nerve, or hypoglossal nerve.