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The Head-Neck Sensory Motor System$
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Alain Berthoz, Werner Graf, and P. P. Vidal

Print publication date: 1992

Print ISBN-13: 9780195068207

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780195068207.001.0001

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Perception of Liminal and Supraliminal Whole-Body Angular Motion

Perception of Liminal and Supraliminal Whole-Body Angular Motion

Chapter:
(p.483) Chapter 76 Perception of Liminal and Supraliminal Whole-Body Angular Motion
Source:
The Head-Neck Sensory Motor System
Author(s):

Alain J. Benson

Sally F. Brown

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195068207.003.0076

Understanding the head-neck system involves knowledge about the sensitivity and dynamics of the ampullary receptors of the semicircular canals, the macular receptors of the otolith organs, and the cervical mechanoreceptors. This chapter deals with the perception of sensory information from the semicircular canals engendered by whole-body angular motion stimuli. Thresholds for the detection of discrete angular movements in x, y, and z axes are presented in this chapter. Moreover, the effects of head-fixed visual display and stimulus duration on thresholds are discussed. It is concluded that although there is a complex interrelationship between velocity, acceleration, and frequency in determining the subjective intensity of whole-body angular acceleration, the experiments using supraliminal stimuli are in agreement with the studies about thresholds.

Keywords:   ampullary receptors, otolith organ, supraliminal stimuli, frequency, sensitivity, dynamics, movements

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