47:
230:
In comatose patients with cerebral damage, the fast phase of nystagmus will be absent as this is controlled by the cerebrum. As a result, using cold water irrigation will result in deviation of the eyes toward the ear being irrigated. If both phases are absent, this suggests the patient's brainstem
199:
If the water is warm (44 °C or above) endolymph in the ipsilateral horizontal canal rises, causing an increased rate of firing in the vestibular afferent nerve. This situation mimics a head turn to the ipsilateral side. Both eyes will turn toward the contralateral ear, with horizontal
211:(30 °C or below), the endolymph falls within the semicircular canal, decreasing the rate of vestibular afferent firing. This situation mimics a head turn to the contralateral side. The
132:
The test is commonly used by physicians, audiologists and other trained professionals to validate a diagnosis of asymmetric function in the peripheral
476:
264:
André JM, Martinet N, Paysant J, Beis JM, Le
Chapelain L (2001). "Temporary phantom limbs evoked by vestibular caloric stimulation in amputees".
68:
56:
Cold water introduced into right external meatus showing effects opposite to that produced by introduction of hot water. (Lawrence et al. 1960)
343:
183:, usually using a syringe. The temperature difference between the body and the injected water creates a convective current in the
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Absent reactive eye movement suggests vestibular weakness of the horizontal semicircular canal of the side being stimulated.
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293:"Vestibular caloric stimulation evokes phantom limb illusions in patients with paraplegia"
191:. Hot and cold water produce currents in opposite directions and therefore a horizontal
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412:"Outcome prediction in comatose patients: significance of reflex eye movement analysis"
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140:(ENG) battery of tests. It is one of several tests which can be used to test for
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One novel use of this test has been to provide temporary pain relief from
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30:"Nystagmus test" redirects here. For the field sobriety test, see
458:
195:
in opposite directions. In patients with an intact brainstem:
490:
291:
Le
Chapelain L, Beis JM, Paysant J, André JM (February 2001).
231:
reflexes are also damaged and carries a very poor prognosis.
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that involves irrigating cold or warm water or air into the
410:
Mueller-Jensen A, Neunzig HP, Emskötter T (April 1987).
204:(quick horizontal eye movements) to the ipsilateral ear.
171:, and other consequences of right hemispheric damage.
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Unilateral neglect: clinical and experimental studies
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Ice cold or warm water or air is introduced into the
571:
553:
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62:
39:
159:. It can also induce a temporary remission of
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8:
40:Caloric reflex test, vestibulo-ocular reflex
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463:
455:
435:
308:
266:Neuropsychiatry Neuropsychol Behav Neurol
136:. Calorics are usually a subtest of the
256:
338:. Psychology Press. pp. 111–113.
219:ear, with horizontal nystagmus to the
36:
163:, the visual and personal aspects of
7:
27:Test of the vestibulo-ocular reflex
332:Robertson IH, Marshall JC (1993).
207:If the water is cold, relative to
25:
416:J. Neurol. Neurosurg. Psychiatry
45:
116:. This method was developed by
365:Purves D, et al. (2004).
103:vestibular caloric stimulation
32:Horizontal gaze nystagmus test
18:Vestibular caloric stimulation
1:
124:in 1914 for this discovery.
589:Auditory brainstem response
641:
29:
44:
181:external auditory canal
114:external auditory canal
110:vestibulo-ocular reflex
187:of the nearby lateral
594:Electronystagmography
428:10.1136/jnnp.50.4.389
310:10.1038/sj.sc.3101093
215:then turn toward the
175:Technique and results
138:electronystagmography
615:Physical examination
584:Caloric reflex test
381:Nystagmus, Acquired
165:hemispatial neglect
108:) is a test of the
96:caloric reflex test
398:Neurosurgery Quiz.
189:semicircular canal
149:phantom limb pains
98:(sometimes termed
625:Medical mnemonics
602:
601:
345:978-0-86377-208-5
134:vestibular system
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87:
16:(Redirected from
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241:Balance disorder
209:body temperature
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21:
640:
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540:Tympanocentesis
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396:Narenthiran G.
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5:
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620:Ear procedures
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579:Epley maneuver
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169:hemianesthesia
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50:
42:
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26:
24:
14:
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563:Mastoidectomy
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545:Myringoplasty
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535:Tympanoplasty
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422:(4): 389–92.
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272:(3): 190–96.
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221:contralateral
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367:Neuroscience
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349:. Retrieved
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303:(2): 85–87.
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120:, who won a
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52:Caloric test
51:
525:Myringotomy
297:Spinal Cord
217:ipsilateral
161:anosognosia
157:paraplegics
122:Nobel prize
76:MedlinePlus
609:Categories
517:Middle ear
487:procedures
485:Tests and
369:. Sinauer.
351:2010-06-04
252:References
142:brain stem
555:Inner ear
507:Otoplasty
499:Outer ear
386:eMedicine
246:Inner ear
202:nystagmus
193:nystagmus
185:endolymph
319:11402363
278:11513103
235:See also
153:amputees
92:medicine
64:ICD-9-CM
489:on the
446:3585347
437:1031870
144:death.
128:Utility
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94:, the
82:003429
572:Tests
106:'
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69:95.44
442:PMID
340:ISBN
315:PMID
274:PMID
223:ear.
213:eyes
155:and
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432:PMC
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384:at
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151:in
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