Document Detail


Involuntary Rotations of a Steering Device Induced by Voluntary Rotations of the Head and Maintained Eccentric Head Positions.
MedLine Citation:
PMID:  11177635     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In a series of 4 experiments, the authors examined involuntary rotations of a steering device (handlebar or wheel) that were associated with periodic head rotations and eccentric head positions. Periodic head rotations resulted in isodirectional involuntary rotations of a horizontally arranged steering device of very small amplitude. When the orientation of a steering wheel was changed to vertical and to a backward tilt, the involuntary rotations were in the opposite direction. That pattern of results is consistent with the assumption that small movements of the shoulder girdle, which are associated with head turns and which cannot be prevented by mechanical immobilization of the shoulder, are propagated to the wheel, but is not consistent with previous suggestions that involuntary rotations of a steering device can result from the action of the tonic neck reflex. Effects that correspond to the pattern of the tonic neck reflex were found only when a spring-centered handlebar was held in an eccentric position; maintenance of the eccentric position was facilitated when the participant's head was turned in the opposite direction. The findings strongly suggest that head movements can result in involuntary movements of a steering device via different mechanisms.
Authors:
Herbert Heuer; Wolfhard Klein
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Journal of motor behavior     Volume:  31     ISSN:  -     ISO Abbreviation:  J Mot Behav     Publication Date:  1999 Sep 
Date Detail:
Created Date:  2001-Feb-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0236512     Medline TA:  J Mot Behav     Country:  -    
Other Details:
Languages:  ENG     Pagination:  248-264     Citation Subset:  -    
Affiliation:
Institut für Arbeitsphysiologie an der Universität Dortmund, Ardeystrasse 67, 44139, Dortmund, Germany. Heuer@arb-phys.unidortmund.de
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