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Head impulses in complete bilateral vestibular loss: Catch-up saccades require visual input


Lehnen, N; Glasauer, S; Jahn, K; Weber, K P (2013). Head impulses in complete bilateral vestibular loss: Catch-up saccades require visual input. Neurology, 81(7):688-690.

Abstract

Patients with bilateral vestibular loss (BVL) experience oscillopsia during passive head movements,(1) e.g., walking or driving. Because their vestibulo-ocular reflex does not stabilize gaze with compensatory eye movements, patients with vestibular deficiency make refixation saccades to a target.(2) Some can trigger directionally accurate "covert" saccades during head movements and "overt" saccades afterward.(3) Covert saccades, with latencies as short as 70 milliseconds in unilateral vestibular loss,(3) reduce oscillopsia. To clarify the underlying mechanism, we investigated the sensory inputs required to evoke short-latency catch-up saccades.

Abstract

Patients with bilateral vestibular loss (BVL) experience oscillopsia during passive head movements,(1) e.g., walking or driving. Because their vestibulo-ocular reflex does not stabilize gaze with compensatory eye movements, patients with vestibular deficiency make refixation saccades to a target.(2) Some can trigger directionally accurate "covert" saccades during head movements and "overt" saccades afterward.(3) Covert saccades, with latencies as short as 70 milliseconds in unilateral vestibular loss,(3) reduce oscillopsia. To clarify the underlying mechanism, we investigated the sensory inputs required to evoke short-latency catch-up saccades.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Ophthalmology Clinic
04 Faculty of Medicine > University Hospital Zurich > Clinic for Neurology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2013
Deposited On:22 Aug 2013 06:37
Last Modified:16 Feb 2018 17:58
Publisher:Lippincott, Williams & Wilkins
ISSN:0028-3878
Additional Information:This is a non-final version of an article published in final form in Neurology
OA Status:Green
Publisher DOI:https://doi.org/10.1212/WNL.0b013e3182a08d36
PubMed ID:23864312

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