Effect of Otolith Deafferentation on Physically Advanced Locomotor Performance in the Squirrel Monkey

Abstract
In this study, the effect of otolith deafferentation (bilateral, two-staged utriculosacculectomy) on the locomotor performance was evaluated by the squirrel monkey rail test. The result (in 7 squirrel monkeys) showed that the difficulty existed in performance recovery of this psychophysically advanced locomotor function after bilateral ablation. For this kind of locomotion, otolith inputs are important, however, not necessarily essential for many subjects when all other existing body equilibrium cues are fully utilized and enhanced.

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