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Published in:
2008 | OriginalPaper | Chapter
Bayesian Modelling of Visuo-Vestibular Interactions
Authors : Jean Laurens, Jacques Droulez
Published in: Probabilistic Reasoning and Decision Making in Sensory-Motor Systems
Publisher: Springer Berlin Heidelberg
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In addition to the five senses usually described, vertebrate species possess a sensory organ that detects motion of the head. This organ is the vestibular system, located in the inner ear. Motion information collected by the vestibular system is crucial for equilibrium. It also contributes to stabilizing the gaze in space during head movements. Motion information provided by the vestibular system generates compensatory eye movement, a phenomenon called the Vestibulo-Ocular Reflex (VOR). The importance of this function is illustrated by the following example (from Guedry (1974)): you can look at the lines on your hand and shake your head at the same time. The VOR provides efficient gaze stabilization in this condition. In contrast, if you shake your hand, looking at the lines becomes impossible.