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Caloric testing

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Caloric testing
Flushing warm and cold water into the ear stimulates the labyrinth and causes vertigo and nystagmus if all the nerve pathways are intact.
Mentioned in: Gulf War Syndrome

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Follow-up ENG showed nystagmus in the right lateral position, and caloric testing elicited no warm or cool responses in the right ear.
more than a 25% difference between left-sided and right-sided horizontal semicircular canal responses demonstrated on caloric testing (ie, degree of canal
Electronystagmography (ENG) revealed a direction-changing positional nystagmus, a 35% reduced vestibular response (RVR) left on alternate binaural bithermal caloric testing, and a type 2 response that revealed the RVR left on simultaneous binaural bithermal testing (figure 1).
 
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