Modulating Auditory Symptoms and Vertigo of Meniere's Disease by Non-invasive Mastoid Electric Stimulation

Inclusion Criteria: * Patients with dizziness (Meniere's) only, who understand the nature of the study and are willing to participate voluntarily. * The frequency of the hearing loss is between 250 kHz and 1 kHz. * Patients with bilateral 500, 1000, and 2000 Hz hearing threshold averages within 65 dB HL * Patients who have received conventional pharmacotherapy for other dizziness conditions with a washout period of 2 months. * To be eligible for subjects in the active phase of the disease, there must be at least 1 vertigo attack in the 6 months before study entry. * If tests for renal function, electrolytes, etc. are performed and no problems are found Exclusion Criteria: * Patients with an otologic condition other than Meniere'ss (dizziness) (otitis media, profound hearing loss, hyperacusis, etc.). * Patients' conditions that may affect EEG measurements, such as a stroke, brain hemorrhage, or brain tumor. * Patients with kidney disease * Patients Have or have had a serious medical condition, such as cancer (including leukemia, blood cancers, epilepsy, and neuropsychiatric conditions). * Patients with an artificial implant in the body (cochlear implant, hip joint, pacemaker, etc.) * Women of childbearing potential, pregnant women, or nursing mothers * Patients who can have Injuries or dermatologic abnormalities at the site of application of the equipment. * Patients with coronary artery disease, uncontrolled high blood pressure, or other serious medical conditions (including kidney disease).