How to Check the Inner Ear?
Checking the inner ear involves a series of tests performed by an audiologist or ENT specialist to assess its function, primarily focusing on the vestibular system (balance) and auditory system (hearing). These tests aren't typically performed at home.
Several tests are used to assess different aspects of inner ear function:
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Electronystagmography (ENG) or Videonystagmography (VNG): These tests measure eye movements to evaluate the inner ear's function based on how the eyes respond to different stimuli. As noted in the Mayo Clinic article on Meniere's disease, rotary-chair testing is similar, measuring inner ear function via eye movement responses while seated in a rotating chair. The test is computer-controlled.
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Vestibular Evoked Myogenic Potentials (VEMP) Testing: A computerized test assessing the vestibular system's response to sound stimuli. This measures the function of a specific part of the balance system, as described by Froedtert Hospital. The test involves lying back and receiving sound stimuli.
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Video Head Impulse Test (vHIT): This test assesses the inner ear's function by measuring the eyes' response to sudden head movements.
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Computerized Dynamic Posturography (CDP): This test evaluates balance and stability by analyzing how the body maintains its posture under various conditions.
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Electrocochleography (ECoG): This test measures the electrical activity of the cochlea (inner ear's hearing organ).
Why are these tests necessary?
These tests are crucial for diagnosing various inner ear conditions, including:
- Dizziness and Vertigo: UChicago Medicine highlights that vestibular testing is performed to diagnose these symptoms.
- Meniere's Disease: The Mayo Clinic uses these tests, particularly ENG/VNG and rotary chair testing, in the diagnosis of Meniere's disease.
- Inner Ear Infections (Otitis Interna): While a healthcare provider confirms the diagnosis, these tests can help determine the extent of inner ear involvement. (Cleveland Clinic)
It's important to note that an ENT specialist will determine the appropriate tests based on your specific symptoms and medical history. They will then be able to diagnose any issues and recommend appropriate treatment.
