Reevaluating the Role of Otolith Organs in Nystagmus Generation: An Experimental Approach
Abstract
This study investigates whether the otolith organs—the utricle and saccule—are involved in generating nystagmus. Using both human subject experiments (sway and squat tests) and inertial physical models, we demonstrate that linear accelerations do not produce nystagmus, challenging the prevailing view of an otolith-ocular reflex. Our results suggest that nystagmus is primarily mediated by the semicircular canals, while the otolith organs remain essential for body balance and gravity sensing. These findings prompt a reevaluation of vestibular reflex pathways and highlight the need for further investigation into vestibular physiology.
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