نتایج جستجو برای: vestibulo
تعداد نتایج: 2374 فیلتر نتایج به سال:
background and aim: the video head-impulse test (vhit) measures the vestibulo-ocular reflex (vor) driven by each semicircular canal, following high-acceleration head rotations. the main measurable response is the ratio of eye movement velocity to the angular head velocity, which reflects canal function. although normative data is available for vor gain, most studies only report horizontal vo...
47 Experimental animal models suggest that modulation of the amplitude and 48 direction of vestibular reflexes are important functions of the vestibulo-cerebellum and 49 contribute to the control of gaze and balance. These critical vestibular functions have 50 been infrequently quantified in human cerebellar disease. In 13 subjects with ataxia 51 telangiectasia (A-T), a disease associated with ...
Transformation of head-fixed otolith signals into a space-fixed frame of reference is essential for perception of self-orientation and ocular motor control. In monkeys the nodulus and ventral uvula of the vestibulo-cerebellum facilitate this transformation by computing an internal estimate of direction of gravity. These experimental findings motivated the hypothesis that degeneration of the ves...
Humans are able to stabilize the images of moving targets on the retina by means of smooth pursuit eye movements. After the pontine level, all smooth pursuit pathways pass through the cerebellum. Previous animal studies gave evidence that two specific lesion sites within the cerebellum cause smooth pursuit disorders: those of the flocculus/paraflocculus and the vermis including lobule VI, VII, ...
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