Caloric testing

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Identifier NOVEL_Calorics
Title Caloric testing
Subject Normal VOR, Abnormal VOR, Vestibular Lab Testing, Calorics
Creator Francis Creighton, M.D., Department of Otolaryngology - Head & Neck Surgery, Division of Neuro-otology, The Johns Hopkins School of Medicine; Daniel R. Gold, D.O.; Departments of Neurology, Ophthalmology, Neurosurgery, Otolaryngology - Head & Neck Surgery, The Johns Hopkins School of Medicine
Description Caloric testing is a peripheral vestibular test which takes advantage of the fact that the labyrinth is sensitive to temperature changes. Warm stimulation causes excitation of the semicircular canals while cold stimulation causes inhibition of the semicircular canals. Caloric testing is performed by providing a warm or cold stimulus (often water or air) to the external ear canal. Patients' eye movements in response to this are recorded and measured. Patients are placed in dark environments with video goggles in order to eliminate fixation thereby accentuating peripheral vestibular nystagmus (Fig 1). The change in temperature of the external auditory canal is transmitted most readily to the horizontal canal due to its proximity to the tympanic membrane and external ear canal. Due to this, the caloric is generally viewed as a test specifically examining the horizontal canal function.
Publisher Spencer S. Eccles Health Sciences Library, University of Utah
Date 2018-03
Format application/pdf
Rights Management Copyright 2018. For further information regarding the rights to this collection, please visit: https://NOVEL.utah.edu/about/copyright
Collection Neuro-ophthalmology Virtual Education Library: NOVEL http://NOVEL.utah.edu
Language eng
ARK ark:/87278/s6kq21sh
Setname ehsl_novel_gold
Date Created 2018-03-15
Date Modified 2018-08-06
ID 1306740
Reference URL https://collections.lib.utah.edu/ark:/87278/s6kq21sh
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