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Neck afferent involvement in cardiovascular control during movementIt is well established that labyrinth and neck afferent information contributes to the regulation of somatomotor function during movement and changes in posture. There is also convincing evidence that the vestibular system participates in the modulation of sympathetic outflow and cardiovascular function during changes in posture, presumably to prevent orthostatic hypotension. However, the labyrinth organs do not provide any signals concerning body movements with respect to the head. In contrast, the neck receptors, particularly muscle spindles, are well located and suited to provide information about changes in body position with respect to the head and vestibular signals. Studies in the cat suggest that neck afferent information may modulate the vestibulosympathetic reflex responses to head-neck movements. There is some evidence in the cat to suggest involvement of low threshold mechanoreceptors. However, human studies do not indicate that low threshold mechanoreceptors in the neck modulate cardiovascular responses. The human studies are consistent with the studies in the cat in that they demonstrate the importance of otolith activation in mediating cardiovascular and sympathetic responses to changes in posture. This paper briefly reviews the current experimental evidence concerning the involvement of neck afferent information in the modulation of cardiovascular control during movement and changes in posture.
Document ID
20040112717
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bolton, P. S.
(School of Biomedical Sciences, University of Newcastle Faculty of Medicine and Health Sciences, Callaghan, New South Wales, Australia)
Ray, C. A.
Date Acquired
August 21, 2013
Publication Date
September 1, 2000
Publication Information
Publication: Brain research bulletin
Volume: 53
Issue: 1
ISSN: 0361-9230
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other
Keywords
Review
Review, Tutorial
Non-NASA Center
NASA Discipline Neuroscience

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