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Vestibular evoked myogenic potentials in response to laterally directed skull taps
Karolinska Hospital.
2002 (English)In: Journal of Vestibular Research-Equilibrium & Orientation, ISSN 0957-4271, Vol. 12, no 1, 35-45 p.Article in journal (Refereed) Published
Abstract [en]

In recent years it has been demonstrated that loud clicks generate short latency vestibular evoked myogenic potentials (VEMP). It has also been demonstrated that midline forehead skull tap stimulation evokes similar VEMP. In the present study, the influence of skull tap direction on VEMP was studied in 13 normal subjects and in five patients with unilateral vestibular loss. Gentle skull taps were delivered manually above each ear on the side of the skull. The muscular responses were recorded over both sternocleidomastoid muscles using skin electrodes. Among the normals, laterally directed skull taps evoked "coordinated contraction-relaxation responses", i.e. skull taps on one side evoked a negative-positive "inverted" VEMP on that side and a positive-negative "normal" VEMP on the other side. Among patients with unilateral vestibular function loss, skull taps above the lesioned ear evoked similar coordinated contraction-relaxation responses. However, skull taps above the healthy ear did not evoke that type of response. These findings suggest that laterally directed skull taps activate mainly the contralateral labyrinth.

Place, publisher, year, edition, pages
2002. Vol. 12, no 1, 35-45 p.
Keyword [en]
VEMP, skull taps, sacculus, utriculus, vestibulocollic
National Category
URN: urn:nbn:se:kth:diva-45647ISI: 000180288300004PubMedID: 12515890OAI: diva2:452852
QC 20111102Available from: 2011-10-31 Created: 2011-10-31 Last updated: 2011-11-02Bibliographically approved

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Tribukait, Arne
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