Vestibulo-ocular reflex and the head impulse test
نویسندگان
چکیده
منابع مشابه
Vestibulo-ocular reflex and the head impulse test.
The authors highlights the importance of the vestibulo-ocular reflex examination through the head impulse test as a diagnostic method for vestibular dysfunction as well as, and primarily, a bedside semiotic resource capable of differentiating between acute peripheral vestibulopathy and a cerebellar or brainstem infarction in emergency rooms.
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 vo...
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 کاملEthanol consumption impairs vestibulo-ocular reflex function measured by the video head impulse test and dynamic visual acuity.
Ethanol affects many parts of the nervous system, from the periphery to higher cognitive functions. Due to the established effects of ethanol on vestibular and oculomotor function, we wished to examine its effect on two new tests of the vestibulo-ocular reflex (VOR): the video head impulse test (vHIT) and dynamic visual acuity (DVA). We tested eight healthy subjects with no history of vestibula...
متن کاملMotorized head impulse rotator for horizontal vestibulo-ocular reflex: Normal responses.
OBJECTIVE To characterize the horizontal angular vestibulo-ocular reflex using a new motorized head impulse rotator and electro-oculography technique. DESIGN Prospective case-control study. PARTICIPANTS We included 22 healthy volunteers with unpredictable, horizontal motorized head impulses with a mean velocity of 170 degrees/s and a mean acceleration of 1550 degrees/s2. We recorded head an...
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ژورنال
عنوان ژورنال: Arquivos de Neuro-Psiquiatria
سال: 2012
ISSN: 0004-282X
DOI: 10.1590/s0004-282x2012001200008