Vestibulo-Ocular Responses During Static Head Roll and Three-Dimensional Head Impulses After Vestibular Neuritis.
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| Title: | Vestibulo-Ocular Responses During Static Head Roll and Three-Dimensional Head Impulses After Vestibular Neuritis. |
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| Authors: | Schmid-Priscoveanu, A., Straumann, D., Böhmer, A., Obzina, H. |
| Source: | Acta Oto-Laryngologica. 12/30/99, Vol. 119 Issue 7, p750-757. 8p. |
| Subjects: | Neuritis, Vestibular apparatus, Eye movements, Torsion |
| Abstract: | This study aimed to investigate whether unilateral vestibular neuritis (VN) causes the same deficits of ocular counter-roll during static head roll (OCR[sub S]) and dynamic vestibulo-ocular reflex gains during head impulses (VOR[sub HI]) as unilateral vestibular deafferentation (VD). Ten patients with acute and 14 patients with chronic vestibular paralysis after VN were examined. The testing battery included fundus photography of both eyes with the head upright (binocular cyclorotation) and dual search coil recordings in a three-field magnetic frame. With one dual search coil on the right eye and the other on the forehead, the following stimuli were given: i) Halmagyi-Curthoys head impulses about the vertical, horizontal and torsional axes. ii) Static roll positions of the head up to 20° right- and left-ear-down by movement of the neck. The comparison group consisted of 19 healthy subjects. Compared with the VD-patients, as reported in the literature, acute VN-patients showed the same pattern of OCR[sub S] gain reduction and binocular cyclorotation (CR[sub b]). The main feature that distinguished chronic VN-patients from chronic VD-patients was the normalization of the torsional VOR[sub HI] gain to the affected side, whereas the VOR[sub HI] gains in the horizontal and vertical directions did not show recovery (as in the patients with chronic VD). Chronic VN-patients differed from acute VN-patients by: i) symmetrical OCRS gains, ii) a less pronounced CRb toward the affected side, and iii) a normal torsional VOR[sub HI] gain toward the affected side. Since the ipsilesional torsional VOR[sub HI] gain did not recover in VD-patients, the normalization of this gain in our VN-patients can only be explained by a (partial) recovery of otolith function on the side of the lesion after the neuritis. [ABSTRACT FROM AUTHOR] |
| Copyright of Acta Oto-Laryngologica is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 4876135 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Vestibulo-Ocular Responses During Static Head Roll and Three-Dimensional Head Impulses After Vestibular Neuritis. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Schmid-Priscoveanu%2C+A%2E%22">Schmid-Priscoveanu, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Straumann%2C+D%2E%22">Straumann, D.</searchLink><br /><searchLink fieldCode="AR" term="%22Böhmer%2C+A%2E%22">Böhmer, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Obzina%2C+H%2E%22">Obzina, H.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Acta+Oto-Laryngologica%22">Acta Oto-Laryngologica</searchLink>. 12/30/99, Vol. 119 Issue 7, p750-757. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Neuritis%22">Neuritis</searchLink><br /><searchLink fieldCode="DE" term="%22Vestibular+apparatus%22">Vestibular apparatus</searchLink><br /><searchLink fieldCode="DE" term="%22Eye+movements%22">Eye movements</searchLink><br /><searchLink fieldCode="DE" term="%22Torsion%22">Torsion</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This study aimed to investigate whether unilateral vestibular neuritis (VN) causes the same deficits of ocular counter-roll during static head roll (OCR[sub S]) and dynamic vestibulo-ocular reflex gains during head impulses (VOR[sub HI]) as unilateral vestibular deafferentation (VD). Ten patients with acute and 14 patients with chronic vestibular paralysis after VN were examined. The testing battery included fundus photography of both eyes with the head upright (binocular cyclorotation) and dual search coil recordings in a three-field magnetic frame. With one dual search coil on the right eye and the other on the forehead, the following stimuli were given: i) Halmagyi-Curthoys head impulses about the vertical, horizontal and torsional axes. ii) Static roll positions of the head up to 20° right- and left-ear-down by movement of the neck. The comparison group consisted of 19 healthy subjects. Compared with the VD-patients, as reported in the literature, acute VN-patients showed the same pattern of OCR[sub S] gain reduction and binocular cyclorotation (CR[sub b]). The main feature that distinguished chronic VN-patients from chronic VD-patients was the normalization of the torsional VOR[sub HI] gain to the affected side, whereas the VOR[sub HI] gains in the horizontal and vertical directions did not show recovery (as in the patients with chronic VD). Chronic VN-patients differed from acute VN-patients by: i) symmetrical OCRS gains, ii) a less pronounced CRb toward the affected side, and iii) a normal torsional VOR[sub HI] gain toward the affected side. Since the ipsilesional torsional VOR[sub HI] gain did not recover in VD-patients, the normalization of this gain in our VN-patients can only be explained by a (partial) recovery of otolith function on the side of the lesion after the neuritis. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Acta Oto-Laryngologica is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1080/00016489950180379 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 750 Subjects: – SubjectFull: Neuritis Type: general – SubjectFull: Vestibular apparatus Type: general – SubjectFull: Eye movements Type: general – SubjectFull: Torsion Type: general Titles: – TitleFull: Vestibulo-Ocular Responses During Static Head Roll and Three-Dimensional Head Impulses After Vestibular Neuritis. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Schmid-Priscoveanu, A. – PersonEntity: Name: NameFull: Straumann, D. – PersonEntity: Name: NameFull: Böhmer, A. – PersonEntity: Name: NameFull: Obzina, H. IsPartOfRelationships: – BibEntity: Dates: – D: 30 M: 12 Text: 12/30/99 Type: published Y: 1999 Identifiers: – Type: issn-print Value: 00016489 Numbering: – Type: volume Value: 119 – Type: issue Value: 7 Titles: – TitleFull: Acta Oto-Laryngologica Type: main |
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