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THE NEUROPHYSIOLOGY OF EYE-HEAD COORDINATION IBD

VDM VERLAG DR. MUELLER E.K.
06 / 2008
9783639045284
Inglés

Sinopsis

Research was conducted in order to simulate real-life impacts during shifts of gaze in humans. The objective of the research was achieved by applying assisting and opposing torque loads during gaze shifts of human subjects through a servomotor. The subjects performed a simple visual task to guide their gaze shifts in the dark. The visual task led the subject`s gaze towards eccentricities of a range within which the head`s contribution to the gaze coordinated movement is in¡dispensable. The novel gaze movement trajectories produced support the existence of a feedback control mechanism in the eye-head coordi¡nation system that keeps track of the on-going movement and adjusts the movement`s kinematics on-line accordingly. The addition of a neck-muscle generated mechanism that interferes with the vestibulo-ocular reflex and affects the eye`s trajectory post-saccadically is here¡by proposed as a complement to the existing neurophysiological feed¡back models.

PVP
60,31