Normative Vestibular-Ocular Reflex Gain Values for the Vertical Semicircular Canals
نویسندگان
چکیده
منابع مشابه
The otolithic origin of the vertical vestibuloocular reflex following bilateral blockage of the vertical semicircular canals in the rabbit.
The influence of bilateral plugs of the anterior and posterior semicircular canals (ASCs, PSCs) on the vertical vestibuloocular reflex (VVOR-0) of the rabbit, oscillated about the longitudinal axis maintained in a horizontal orientation, was studied. Bilateral plugs of either the ASCs or PSCs reduced the gain of the VVOR-0 evoked by stimulus frequencies above 0.005 Hz, but left a residual gain ...
متن کاملNormative vestibulo-ocular reflex data in yaw and pitch axes using the video head-impulse test
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 VOR c...
متن کاملVideo Head Impulse Tests with a Remote Camera System: Normative Values of Semicircular Canal Vestibulo-Ocular Reflex Gain in Infants and Children
The video head impulse test (VHIT) is widely used to identify semicircular canal function impairments in adults. But classical VHIT testing systems attach goggles tightly to the head, which is not tolerated by infants. Remote video detection of head and eye movements resolves this issue and, here, we report VHIT protocols and normative values for children. Vestibulo-ocular reflex (VOR) gain was...
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The vestibular apparatus plays a fundamental role in equilibrioception. It is located in the inner ear and it substantially comprises otoliths, which indicate linear acceleration, and semicircular canals, which detect rotational acceleration. In this paper models of different complexity of the semicircular canals are reported and discussed: a monocanal hydro-elastic model and a three-canals mod...
متن کاملMorphology of the mammalian vestibulo-ocular reflex: the spatial arrangement of the human fetal semicircular canals and extraocular muscles.
The vestibulo-ocular reflex is the system of compensatory ocular movements in response to stimulation of the kinetic labyrinth seen in all vertebrates. It allows maintenance of a stable gaze even when the head is moving. Perhaps the simplest influence on the VOR is the spatial orientation of the planes of the semicircular canals relative to the extraocular muscles. It is hypothesized that the e...
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ژورنال
عنوان ژورنال: Research in Vestibular Science
سال: 2020
ISSN: 2092-8882,2093-5501
DOI: 10.21790/rvs.2020.19.2.62