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Reversed Corrective Saccades during Head Impulse Test in Acute Cerebellar Dysfunction

Cited 13 time in Web of Science Cited 11 time in Scopus
Authors
Choi, Jeong-Yoon; Kim, Ji-Soo; Jung, Jin-Man; Kwon, Do-Young; Park, Moon Ho; Kim, Chulhan; Choi, June
Issue Date
2014-04
Publisher
Springer Verlag
Citation
Cerebellum, Vol.13 No.2, pp. 243-247
Keywords
복합학VertigoVestibulo-ocular reflexCerebellumHead impulse test
Abstract
Patients with cerebellar lesions may show horizontal (positive)- or downward (perverted)-corrective saccades during horizontal head impulse test (HIT). However, corrective saccades in the direction of head rotation (reversed corrective saccades) have not been reported during HIT. We present two patients who showed reversed corrective saccades during horizontal HIT as an initial sign of acute cerebellitis. In contrast to the corrective saccades mostly observed in peripheral vestibular paresis, this paradoxical response indicates abnormally increased vestibulo-ocular responses due to cerebellar disinhibition over the vestibulo-ocular reflex. This paradoxical response should be considered an additional bedside cerebellar sign.
ISSN
1473-4222
Language
English
URI
http://hdl.handle.net/10371/94248
DOI
https://doi.org/10.1007/s12311-013-0535-2
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College of Medicine/School of Medicine (의과대학/대학원)Dept. of Neurology (신경과학교실)Journal Papers (저널논문_신경과학교실)
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