Electrophysiological hearing tests are diagnostic procedures that are used in the field of ENT to test the functioning of the ear. An electric current is produced when parts of the inner ear are stimulated. The procedure measures this electric charge to locate irregularities in hearing and balance.
The cells in the cochlea receive stimulation and send signals to the brain and transmit a response to the external ear. Distortion Product Otoacoustic Emissions (DPOAEs) measures this subtle response to check the functioning of the inner ear. Electrophysiological hearing treatment is used to diagnose hearing loss in infants, while in adults it is a part of the whole range of diagnostic procedures. A small probe inserted into the patient's ear produces two distorted sounds to stimulate hair cells within the cochlea. The response produced by the cells of the cochlea is picked up by a sensitive microphone. The response waves are analyzed to delineate damages to the cells of cochlea. Electrophysiology of the heart is a branch of cardiology that deals with the diagnosis and treatment of heart rhythm disorders. The test is helpful in determining disorders such as artery hardening, cholesterol, high blood pressure, or diabetes.
The inner ear controls the balance of the human body. Any infection or disease affecting the inner ear can cause dizziness, imbalance, or vertigo. A nystagmography test forms a part of electrophysiological tests performed to check balance system of the ear. The instruments check eyes, ears, muscle joint sense, and brain to delineate damage or diseases affecting the bones and structures that control balance.