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Oculomotor control

Speciality of motor control studies dealing with the various types of eye movements, oculomotricity has been initially studied mainly as a model of sensori-motor transformations. The adequacy of this model relies on the relatively simple bio-mechanical system involved (3 degrees of freedom and 6 muscles for each eye, negligible inertia of eyeball, lack of stretch reflex), on the possibility for neurophysiological studies in animals to access the whole oculomotor neuronal network, and on the technical and practical improvements of modern eye-tracking equipments. Other scientific contexts explain the currently regaining interest for the study of oculomotricity. These are, on the one hand, visual perception and attention to which eye movements critically contribute and on the other hand, the various neural functions associated with oculomotor behaviour (encoding and updating ofspatial representations, memory, planning, inhibition) and thus the numerous clinical applications of oculomotor tests.

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