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Gravity perception in cerebellar patients


Tarnutzer, A A; Marti, S; Straumann, D (2008). Gravity perception in cerebellar patients. Progress in Brain Research, 171:369-372.

Abstract

Patients with midline cerebellar atrophy typically suffer from impaired postural balance. We asked whether this deficit is, in part, caused by a deficient perception of body position relative to gravity, and therefore measured the subjective visual vertical (SVV) in patients with degeneration predominantly of the midline cerebellar structures (n=11) and age-matched healthy human subjects (n=9). On a motorized turntable, subjects were placed in different roll positions [0, 75 degrees right ear down (RED), 75 degrees left ear down (LED)] and had to align a luminous arrow with the perceived earth-vertical. Both SVV deviations and intra-individual SD of SVV adjustments were not significantly different between patients and age-matched controls. Our findings suggest that the perception of verticality in patients with cerebellar ataxia may only deteriorate in a more advanced stage of the disease. To which degree the deterioration of perceived vertical is caused by a collateral vestibular impairment, awaits further clarification.

Patients with midline cerebellar atrophy typically suffer from impaired postural balance. We asked whether this deficit is, in part, caused by a deficient perception of body position relative to gravity, and therefore measured the subjective visual vertical (SVV) in patients with degeneration predominantly of the midline cerebellar structures (n=11) and age-matched healthy human subjects (n=9). On a motorized turntable, subjects were placed in different roll positions [0, 75 degrees right ear down (RED), 75 degrees left ear down (LED)] and had to align a luminous arrow with the perceived earth-vertical. Both SVV deviations and intra-individual SD of SVV adjustments were not significantly different between patients and age-matched controls. Our findings suggest that the perception of verticality in patients with cerebellar ataxia may only deteriorate in a more advanced stage of the disease. To which degree the deterioration of perceived vertical is caused by a collateral vestibular impairment, awaits further clarification.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Integrative Human Physiology
04 Faculty of Medicine > Neuroscience Center Zurich
04 Faculty of Medicine > University Hospital Zurich > Clinic for Neurology
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Language:English
Date:2008
Deposited On:10 Dec 2008 08:13
Last Modified:05 Apr 2016 12:34
Publisher:Elsevier
ISSN:0079-6123
Publisher DOI:10.1016/S0079-6123(08)00654-7
PubMed ID:18718328
Permanent URL: http://doi.org/10.5167/uzh-5561

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