Visual Cue Alteration and Bodily Equilibrium in Squirrel Monkeys

Abstract

Bodily equilibrium maintenance ability in squirrel monkeys was behaviorally (squirrel monkey rail test) examined before and after the administration of cyclopentolate hydrochloride and homatropine eye drops. The maximum ability of dynamic equilibrium maintenance declined significantly (statistically) after the administration of cyclopentolate hydrochloride eye drops; however, homatropine eye drops failed to produce any significant change in performance. In the squirrel monkey, the temporary and partial alteration of the visual cue will affect his equilibrium performance when a physically advanced task is required.