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How to Uncover the Covert Saccade During the Head Impulse Test.

Tjernström, Fredrik LU ; Nyström, Anastasia LU and Magnusson, Måns LU (2012) In Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology 33(9). p.1583-1585
Abstract
OBJECTIVE: The appearance of "covert" saccades in the head impulse test in patients with vestibular loss may lead to diagnostic misinterpretations. Here, we demonstrate a procedure that can convert covert eye saccades to overt when performing the head impulse test. PATIENTS: Patients with known vestibular deficits that have covert saccades during head impulse test. INTERVENTION: Diagnostic: random and sudden changes of the amplitude (degree of head turn) when performing the head impulse test. MAIN OUTCOME MEASURE: Evaluation of bedside test with video recording and registration from video head impulse test (v-HIT). RESULTS: A video recording and registration from v-HIT that demonstrate the covert saccades of a subject and how the overt... (More)
OBJECTIVE: The appearance of "covert" saccades in the head impulse test in patients with vestibular loss may lead to diagnostic misinterpretations. Here, we demonstrate a procedure that can convert covert eye saccades to overt when performing the head impulse test. PATIENTS: Patients with known vestibular deficits that have covert saccades during head impulse test. INTERVENTION: Diagnostic: random and sudden changes of the amplitude (degree of head turn) when performing the head impulse test. MAIN OUTCOME MEASURE: Evaluation of bedside test with video recording and registration from video head impulse test (v-HIT). RESULTS: A video recording and registration from v-HIT that demonstrate the covert saccades of a subject and how the overt saccade is uncovered by changing the amplitude of the head impulse. Five cases are briefly presented. CONCLUSION: By performing the head impulse test with random amplitudes, overt saccades may become detectable and advance accuracy in bedside diagnosis of vestibular deficits. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bedside, Clinical, Covert saccades, Head impulse test, Vestibular loss
in
Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology
volume
33
issue
9
pages
1583 - 1585
publisher
Lippincott Williams & Wilkins
external identifiers
  • wos:000311214500027
  • pmid:23047258
  • scopus:84870311913
ISSN
1537-4505
DOI
10.1097/MAO.0b013e318268d32f
language
English
LU publication?
yes
id
cc4d9b60-be15-432c-81a5-ebe78c5100d8 (old id 3160935)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/23047258?dopt=Abstract
date added to LUP
2012-11-01 15:53:13
date last changed
2017-11-05 04:11:06
@article{cc4d9b60-be15-432c-81a5-ebe78c5100d8,
  abstract     = {OBJECTIVE: The appearance of "covert" saccades in the head impulse test in patients with vestibular loss may lead to diagnostic misinterpretations. Here, we demonstrate a procedure that can convert covert eye saccades to overt when performing the head impulse test. PATIENTS: Patients with known vestibular deficits that have covert saccades during head impulse test. INTERVENTION: Diagnostic: random and sudden changes of the amplitude (degree of head turn) when performing the head impulse test. MAIN OUTCOME MEASURE: Evaluation of bedside test with video recording and registration from video head impulse test (v-HIT). RESULTS: A video recording and registration from v-HIT that demonstrate the covert saccades of a subject and how the overt saccade is uncovered by changing the amplitude of the head impulse. Five cases are briefly presented. CONCLUSION: By performing the head impulse test with random amplitudes, overt saccades may become detectable and advance accuracy in bedside diagnosis of vestibular deficits.},
  author       = {Tjernström, Fredrik and Nyström, Anastasia and Magnusson, Måns},
  issn         = {1537-4505},
  keyword      = {Bedside,Clinical,Covert saccades,Head impulse test,Vestibular loss},
  language     = {eng},
  number       = {9},
  pages        = {1583--1585},
  publisher    = {Lippincott Williams & Wilkins},
  series       = {Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology},
  title        = {How to Uncover the Covert Saccade During the Head Impulse Test.},
  url          = {http://dx.doi.org/10.1097/MAO.0b013e318268d32f},
  volume       = {33},
  year         = {2012},
}