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Electro/Video-nystagmomography (ENG/VNG) uses small electrodes over the skin around the eyes or video goggles to record eye movements. Assesses eyes movements while following a moving object, when the head is placed in different positions, and with changes in temperature to the ear (with air or water).
Rotation Tests use video goggles or electrodes which record eye movements as the head is rotated from side to side. These include the auto head rotation, computerized rotary chair test, or a general screening test.
Vestibular Evoked Myogenic Potential (VEMP) evaluates whether certain vestibular organs and associated nerves are intact and functioning normally. Electrodes are attached to the skin near the eyes and neck as sound is played through ear phones, which stimulates the vestibular organs and causes activation or reduction in activity of corresponding muscles.
Audiometry (Hearing Tests) consists of presenting words and tones at different pitches and levels, measuring the patient's ability to distinguish these tones/words with headphones. Tymphanometry and acoustic reflex are common hearing tests.
Otoacoustic Emissions (OAE) provides information about how the hair cells of the cochlea are working when a series of clicks are produced by a tiny speaker inserted into the ear canal. This is done in infants and young children.
Electrochochleography (ECog) utilizes an earphone which plays sound in the ear and electrodes which measure the response while a patient lies still.
Auditory Brainstem Response Test (ABR) measures how the nervous system responds to sound and is used when patients cannot respond to audiometry testing (infants). This test can indicate the presence of an acoustic neuroma.