What is the role of caloric stimulation in electronystagmography (ENG)?

Updated: Aug 06, 2019
  • Author: Angela G Shoup, PhD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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Answer

Answer

Caloric stimulation of the vestibular system offers an assessment of the lateral semicircular canal. [14] This is a valuable tool because it allows for the objective measurement of function from each labyrinth individually. This test is considered nonphysiologic since isolating and stimulating one labyrinth at a time in nature is physiologically impossible. The equivalent speed of stimulation for this test is a very low frequency. Although this is a limiting factor in diagnosis, other tests of vestibular function at higher frequencies are currently not readily available in most clinical settings. [15, 16]


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