What question did this study set out to answer?

To characterize the clinical features and quantitative oculographic patterns associated with a suspected horizontal semicircular canal variant of benign positional vertigo.

December 1, 1993Neurology

Horizontal semicircular canal variant of benign positional vertigo

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Authors

RBRobert W. BalohUniversity of California, Los Angeles KJKathleen M. JacobsonCalifornia Department of Public Health VHVicente HonrubiaUniversity of California, Los Angeles

Discussion

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Overview

Case series reveals direction-changing horizontal positional nystagmus in patients with episodic vertigo, indicating a horizontal semicircular canal variant of benign positional vertigo.

Key Points

To characterize the clinical features and quantitative oculographic patterns associated with a suspected horizontal semicircular canal variant of benign positional vertigo.
Evaluated clinical histories and neurological examinations in N=13 patients presenting with episodic positional vertigo.
Performed quantitative eye-movement recordings to assess direction-changing horizontal positional nystagmus during head turns to the right and left.
All patients exhibited nonfatiguing, direction-changing horizontal positional nystagmus that beat toward the right with rightward head turns and toward the left with leftward head turns.
Neurological examinations showed no central nervous system deficits, indicating a peripheral vestibular localization.
The clinical and oculographic profile is consistent with free-floating debris located within a single horizontal semicircular canal.

Cite This Study

Baloh et al. (1993) studied this question.

synapsesocial.com/papers/6a72c2e875498292b70bb84b https://doi.org/10.1212/wnl.43.12.2542

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December 1, 1993Neurology

Horizontal semicircular canal variant of benign positional vertigo

View Full Paper

Ask AI

Bookmark

Authors

RBRobert W. BalohUniversity of California, Los Angeles KJKathleen M. JacobsonCalifornia Department of Public Health VHVicente HonrubiaUniversity of California, Los Angeles

Discussion

Member takes

Overview

Case series reveals direction-changing horizontal positional nystagmus in patients with episodic vertigo, indicating a horizontal semicircular canal variant of benign positional vertigo.

Key Points

To characterize the clinical features and quantitative oculographic patterns associated with a suspected horizontal semicircular canal variant of benign positional vertigo.
Evaluated clinical histories and neurological examinations in N=13 patients presenting with episodic positional vertigo.
Performed quantitative eye-movement recordings to assess direction-changing horizontal positional nystagmus during head turns to the right and left.
All patients exhibited nonfatiguing, direction-changing horizontal positional nystagmus that beat toward the right with rightward head turns and toward the left with leftward head turns.
Neurological examinations showed no central nervous system deficits, indicating a peripheral vestibular localization.
The clinical and oculographic profile is consistent with free-floating debris located within a single horizontal semicircular canal.

Cite This Study

Baloh et al. (1993) studied this question.

synapsesocial.com/papers/6a72c2e875498292b70bb84b https://doi.org/10.1212/wnl.43.12.2542

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