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Related Experiment Videos

Neck afferent involvement in cardiovascular control during movement.

P S Bolton1, C A Ray

  • 1Discipline of Human Physiology, School of Biomedical Sciences, Faculty of Medicine and Health Sciences, University of Newcastle, Callaghan, New South Wales, Australia. Philip.Bolton@newcastle.edu.au

Brain Research Bulletin
|October 18, 2000
PubMed
Summary

Neck afferent information influences cardiovascular control during posture changes. While the vestibular system manages some responses, neck receptors provide crucial data on body position relative to the head, modulating these reflexes.

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Area of Science:

  • Neuroscience
  • Cardiovascular Physiology
  • Somatic Motor Control

Background:

  • Labyrinth and neck afferent signals regulate somatomotor function and posture.
  • The vestibular system modulates sympathetic outflow and cardiovascular function to prevent orthostatic hypotension.
  • Labyrinth organs lack signals on body movement relative to the head.

Purpose of the Study:

  • To review experimental evidence on neck afferent information's role in cardiovascular control during movement and postural changes.
  • To explore how neck receptors modulate vestibulosympathetic reflex responses.
  • To compare findings across species regarding neck afferent contributions.

Main Methods:

  • Review of existing experimental evidence.
  • Analysis of studies on cats and humans investigating afferent information.
Keywords:
NASA Discipline NeuroscienceNon-NASA Center

Related Experiment Videos

  • Focus on cardiovascular and sympathetic responses to head-neck movements and postural changes.

    • Main Results:

    • Neck afferent information, particularly from muscle spindles, provides data on body position relative to the head.
    • Neck afferent signals may modulate vestibulosympathetic reflex responses to head-neck movements.
    • Human studies confirm otolith activation's importance in cardiovascular and sympathetic responses to posture changes, unlike low-threshold mechanoreceptors.

    Conclusions:

    • Neck afferent information plays a significant role in modulating cardiovascular control during postural adjustments.
    • The interplay between vestibular and neck afferent signals is crucial for maintaining cardiovascular stability.
    • Further research is needed to fully elucidate the mechanisms of neck afferent modulation of cardiovascular reflexes.