DYNAMICS OF EXTRAOCULAR MUSCLE AND ITS OPTIMIZATION

Abstract

A model for the hussn. vertical +rye trunking system s- proposed. This is based on the dynamic characteristics of a variety of *ye movements is weU . as the anatomical and physiQIogical apt rets of the sztraocular mechanism. It Includes the nonlinear .farts-velocity relationship of active muscle and considers separately the distinct ssysmetrlcsl properties of the agonist- sntsgcsist muscle pair. The inertial and view-r1setic forces of the globe and orbit on the muscles is also .included. The nervous activity which causes the ueclea to move the eye woe approxi tad from studies of the axtraocular motor nuclei. Bsepone.a of the model accurately depict positions velocity and acceleration of saccades. The model also reproduces, faithfully, the "main ssquence0 of saccadic velocity versus amplitude» it has been shown that saccades era time optimal.