Document Detail


Head stabilization during locomotion. Perturbations induced by vestibular disorders.
MedLine Citation:
PMID:  1927408     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Head kinematics was studied in 10 normal subjects (NS) and 7 patients (P) with bilateral vestibular deficit while they executed various locomotor tasks. The movement of the body was recorded with a video system which allowed a computer reconstruction of the motion of joint articulations and other selected points on the body in three dimensions. Analyses focus on head translation along the vertical axis and rotation in the sagittal plane. Two conditions were studied: free walking (W) and hopping (H). The subjects were tested in light and in darkness. In NS, while walking in darkness, mean head position was tilted downward. In contrast, this flexion was not systematic in P. Darkness did not significantly influence the amplitude and velocity of head angular displacement during W, but, during H the amplitude decreased by 37% for NS. During H in darkness, head stabilization decreased for P. These results suggest that head kinematics, during natural locomotor tasks, could be used to evaluate vestibular deficiencies.
Authors:
T Pozzo; A Berthoz; E Vitte; L Lefort
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Acta oto-laryngologica. Supplementum     Volume:  481     ISSN:  0365-5237     ISO Abbreviation:  Acta Otolaryngol Suppl     Publication Date:  1991  
Date Detail:
Created Date:  1991-11-07     Completed Date:  1991-11-07     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0370355     Medline TA:  Acta Otolaryngol Suppl     Country:  SWEDEN    
Other Details:
Languages:  eng     Pagination:  322-7     Citation Subset:  IM; S    
Affiliation:
Laboratoire de Physiologie Neurosensorielle du CNRS, Paris, France.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Cues
Darkness
Female
Gentamicins / adverse effects
Head / physiology*
Humans
Locomotion / physiology*
Male
Middle Aged
Nervous System Diseases / physiopathology
Neuroma, Acoustic / physiopathology
Orientation
Posture
Rotation
Vestibular Diseases / chemically induced,  physiopathology*
Vestibular Function Tests
Vision, Ocular / physiology
Chemical
Reg. No./Substance:
0/Gentamicins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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