Perception of Liminal and Supraliminal Whole-Body Angular Motion
Perception of Liminal and Supraliminal Whole-Body Angular Motion
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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