Search Results - "Halmagyi, Michael G"

Capturing acute vertigo: A vestibular event monitor by Young, Allison S, Lechner, Corinna, Bradshaw, Andrew P, MacDougall, Hamish G, Black, Deborah A, Halmagyi, G Michael, Welgampola, Miriam S

“…OBJECTIVETo facilitate the diagnosis of vestibular disorders by patient-initiated capture of ictal nystagmus. METHODSAdults from an Australian neurology…”
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The Video Head Impulse Test (vHIT) of Semicircular Canal Function - Age-Dependent Normative Values of VOR Gain in Healthy Subjects by McGarvie, Leigh A, MacDougall, Hamish G, Halmagyi, G Michael, Burgess, Ann M, Weber, Konrad P, Curthoys, Ian S

“…The video Head Impulse Test (vHIT) is now widely used to test the function of each of the six semicircular canals individually by measuring the eye rotation…”
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A new saccadic indicator of peripheral vestibular function based on the video head impulse test by MacDougall, Hamish G, McGarvie, Leigh A, Halmagyi, G Michael, Rogers, Stephen J, Manzari, Leonardo, Burgess, Ann M, Curthoys, Ian S, Weber, Konrad P

“…OBJECTIVE:While compensatory saccades indicate vestibular loss in the conventional head impulse test paradigm (HIMP), in which the participant fixates an…”
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Normal tendon reflexes despite absent sensory nerve action potentials in CANVAS: a neurophysiological study by Burke, David, Halmagyi, G. Michael

“…CANVAS is a recently defined progressive ataxic syndrome with impairment of vestibular, somatosensory and cerebellar function due to atrophic degeneration of…”
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The human vestibulo-ocular reflex and saccades: normal subjects and the effect of age by Pogson, Jacob M, Taylor, Rachael L, Bradshaw, Andrew P, McGarvie, Leigh, D'Souza, Mario, Halmagyi, G Michael, Welgampola, Miriam S

“…Here we characterize in 80 normal subjects (16-84 yr (means ± SD, 47 ± 19 yr) the vestibulo-ocular reflex (VOR) and saccades in response to three-dimensional…”
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What does the dissociation between the results of video head impulse versus caloric testing reveal about the vestibular dysfunction in Ménière's disease? by McGarvie, Leigh A., Curthoys, Ian S., MacDougall, Hamish G., Halmagyi, G. Michael

“…Conclusion: It is suggested that the different results of rotational (video head impulse - vHIT) and caloric tests in patients with Ménière's disease (MD) may…”
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Vestibular neuritis affects both superior and inferior vestibular nerves by Taylor, Rachael L, McGarvie, Leigh A, Reid, Nicole, Young, Allison S, Halmagyi, G Michael, Welgampola, Miriam S

“…OBJECTIVE:To characterize the profiles of afferent dysfunction in a cross section of patients with acute vestibular neuritis using tests of otolith and…”
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Gentamicin ototoxicity: a 23‐year selected case series of 103 patients by Ahmed, Rebekah M, Hannigan, Imelda P, MacDougall, Hamish G, Chan, Raymond C, Halmagyi, G Michael

“…Objective: To review patients with severe bilateral vestibular loss associated with gentamicin treatment in hospital. Design and setting: A retrospective case…”
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Central Lesions With Selective Semicircular Canal Involvement Mimicking Bilateral Vestibulopathy by Chen, Luke, Halmagyi, G Michael

“…Bilateral vestibulopathy (BVP), which is due to peripheral lesions, may selectively involve certain semicircular canal (SCC). Recent eye movement recordings…”
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Impulsive Testing of Semicircular-Canal Function Using Video-oculography by Weber, Konrad P., MacDougall, Hamish G., Halmagyi, G. Michael, Curthoys, Ian S.

“…The head impulse test (HIT) is a safe, quick way of assessing horizontal semicircular‐canal function in patients with peripheral vestibular loss. At the…”
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Capturing vertigo in the emergency room: three tools to double the rate of diagnosis by Nham, Benjamin, Reid, Nicole, Bein, Kendall, Bradshaw, Andrew P., McGarvie, Leigh A., Argaet, Emma C., Young, Allison S., Watson, Shaun R., Halmagyi, G. Michael, Black, Deborah A., Welgampola, Miriam S.

“…Objective Many patients attending the emergency room (ER) with vertigo, leave without a diagnosis. We assessed whether the three tools could improve ER…”
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Clinical, oculographic and vestibular test characteristics of Ménière’s disease by Young, Allison S., Nham, Benjamin, Bradshaw, Andrew P., Calic, Zeljka, Pogson, Jacob M., Gibson, William P., Halmagyi, G. Michael, Welgampola, Miriam S.

“…Seventy Ménière’s disease (MD) patients with spontaneous vertigo (100%), unilateral aural fullness (57.1%), tinnitus (78.6%), and subjective hearing loss…”
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Dorsal root ganglionopathy is responsible for the sensory impairment in CANVAS by Szmulewicz, David J, McLean, Catriona A, Rodriguez, Michael L, Chancellor, Andrew M, Mossman, Stuart, Lamont, Duncan, Roberts, Leslie, Storey, Elsdon, Halmagyi, G Michael

“…OBJECTIVE:To elucidate the neuropathology in cerebellar ataxia with neuropathy and bilateral vestibular areflexia syndrome (CANVAS), a novel cerebellar ataxia…”
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What does the head impulse test versus caloric dissociation reveal about vestibular dysfunction in Ménière's disease? by McGarvie, Leigh A., Curthoys, Ian S., MacDougall, Hamish G., Halmagyi, G. Michael

“…In patients with Ménière's disease (MD), caloric testing can show, depending on the stage and activity of the disease, a variety of results. Between attacks,…”
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Head impulse compensatory saccades: Visual dependence is most evident in bilateral vestibular loss by Pogson, Jacob M, Taylor, Rachael L, McGarvie, Leigh A, Bradshaw, Andrew P, D'Souza, Mario, Flanagan, Sean, Kong, Jonathan, Halmagyi, G Michael, Welgampola, Miriam S

“…The normal vestibulo-ocular reflex (VOR) generates almost perfectly compensatory smooth eye movements during a 'head-impulse' rotation. An imperfect VOR gain…”
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Application of the Video Head Impulse Test to Detect Vertical Semicircular Canal Dysfunction by MacDougall, Hamish G, McGarvie, Leigh A, Halmagyi, G Michael, Curthoys, Ian S, Weber, Konrad P

“…OBJECTIVEThe video head impulse test (vHIT) is a useful clinical tool to detect semicircular canal dysfunction. However, so far, vHIT has been limited to…”
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Proposed diagnostic criteria for cerebellar ataxia with neuropathy and vestibular areflexia syndrome (CANVAS) by Szmulewicz, David J, Roberts, Leslie, McLean, Catriona A, MacDougall, Hamish G, Halmagyi, G Michael, Storey, Elsdon

“…Diagnosis of ataxic disorders is an important clinical challenge upon which prognostication, management, patient solace, and, above all, the hope of future…”
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The human vestibulo-ocular reflex and compensatory saccades in schwannoma patients before and after vestibular nerve section by Pogson, Jacob M., Taylor, Rachael L., Bradshaw, Andrew P., McGarvie, Leigh, D'Souza, Mario, Flanagan, Sean, Kong, Jonathan, Biggs, Nigel, Shivalingam, Brindha, Greenberg, Simon, Croxson, Glen, Halmagyi, G. Michael, Welgampola, Miriam S.

“…•In unoperated vestibular schwannoma, ipsilesional canals show decreased vestibulo-ocular reflex (VOR) gain and increased saccade amplitude and frequency.•One…”
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Cerebellar ataxia, neuropathy, vestibular areflexia syndrome (CANVAS): a review of the clinical features and video-oculographic diagnosis by Szmulewicz, David J., Waterston, John A., MacDougall, Hamish G., Mossman, Stuart, Chancellor, Andrew M., McLean, Catriona A., Merchant, Saumil, Patrikios, Peter, Halmagyi, G. Michael, Storey, Elsdon

“…The association of bilateral vestibulopathy with cerebellar ataxia was first reported in 1991 and delineated as a distinct syndrome with a characteristic and…”
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Neuro-otology- some recent clinical advances by Welgampola, Miriam S., Akdal, Gülden, Halmagyi, G. Michael

“…Vestibular disorders manifesting as vertigo, chronic dizziness and imbalance are common problems in neurological practice. Here, we review some recent…”
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