Background: The detection of objective changes in the vestibulo-ocular reflex (VOR) preadolescents with complaint dizziness is not easy to be registered. Video Head Impulse Test (VHIT) an exam that quickly analyzes this subject adults and could alternative age group.

level, pupil reaction, and corneal reflex. However, there were many discrepancies in individual patients so that the vestibulo-ocular reflex afforded useful information additional to that obtained from traditional tests. Bilateral abnormal motor activity or absent pupil reactions were often associated with relatively unimpaired vestibulo-ocular reflex responses. There was no correlation between...

level, pupil reaction, and corneal reflex. However, there were many discrepancies in individual patients so that the vestibulo-ocular reflex afforded useful information additional to that obtained from traditional tests. Bilateral abnormal motor activity or absent pupil reactions were often associated with relatively unimpaired vestibulo-ocular reflex responses. There was no correlation between...

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...

The chronic effects of unilateral peripheral vestibular loss (UPVL) are influenced by vestibular compensation. This study documents the balance-related symptoms and quantitative vestibular laboratory testing of 20 patients with surgically confirmed UPVL. Included are measures of the semicircular canal-ocular reflex, the otolith-ocular reflex, and both static and dynamic semicircular canal-otoli...

  Background: Multiple sclerosis (MS) is a chronic neurological disease that affects brain and spinal cord. The infratentorial region contains the cerebellum and brainstem. Vestibular evoked myogenic potentials (VEMPs) are short-latency myogenic responses. Cervical vestibular evoked myogenic potential (cVEMP) is a manifestation of vestibulocolic reflex and ocular vestibular evoked myogenic pote...

The red reflex test is an important part of the newborn's ocular exam. This study investigated the relationship between red reflex in premature newborns (PN) and factors of the newborn history. It's a descriptive, exploratory, quantitative study conducted in a public maternity in Fortaleza, State of Ceará, with 114 PN between the months of April and May of 2004. For data registration was used a...

We have shown previously that the gain of the horizontal vestibulo-ocular reflex (HVOR) is modified by afferent signals from extraocular muscle proprioceptors in the decerebrate pigeon. We have now analysed the variability of the HVOR in intact, alert pigeons and, using the artificial vestibulo-ocular reflex method, have found that in all of the pigeons tested afferent signals from the extraocu...