There is little literature on the semiological aspects of clinical Vestibulo-Occulomotor Reflex (VOR) cancellation technique. This study aims to determine which would be best head movement frequency cutoff perform VOR test. Materials and methods: 98 horizontal semicircular canals with normal gains from individuals were included. The was cancelled by placing a headband fixed target over individu...

Postural control during stance was investigated using the EQUITEST system in 10 patients during recovery after an acute unilateral vestibular lesion and was compared to the time course of recovery of the static and dynamic vestibulo-ocular imbalance. During the acute phase the patients showed a characteristic pattern with normal upright stance as long as at least one accurate sensory input (vis...

UNLABELLED Benign Positional Paroxysmal Vertigo (BPPV) is one of the most common vestibular diseases and the active head rotation test one of the most modern methods of vestibular function assessment. AIM this study aims to verify if the active head rotation test may reveal signs of horizontal and/or vertical vestibulo-ocular reflex dysfunction in vertigo patients suspected for BPPV. STUDY ...

BACKGROUND The rotational vestibulo-ocular reflex (rVOR) generates compensatory eye movements in response to rotational head accelerations. The velocity-storage mechanism (VSM), which is controlled by the vestibulo-cerebellar nodulus and uvula, determines the rVOR time constant. In healthy subjects, it has been suggested that self-motion perception in response to earth-vertical axis rotations d...

KEY POINTS Directionality, inherent to movements, has behavioural and neuronal correlates. Direction of vestibular stimulation determines motor learning efficiency. Vestibulo-ocular reflex gain-increase correlates with Purkinje cell simple spike potentiation. The locus of neural correlates for vestibulo-ocular reflex adaptation is paradigm specific. ABSTRACT Compensatory eye movements elicite...

In the present study the optokinetic reflex, vestibulo-ocular reflex and their interaction were investigated in the mouse, using a modified subconjunctival search coil technique. Gain of the ocular response to sinusoidal optokinetic stimulation was relatively constant for peak velocities lower than 8 degrees /s, ranging from 0.7 to 0.8. Gain decreased proportionally to velocity for faster stimu...

The vestibulo-ocular reflex, because of its close relationship with the cerebellum and its marked adaptiveness, has become a model system for studying the functions of the cerebellum. It has been hypothesized that an evolutionarily old part of the cerebellum, the flocculus, forms a modifiable accessory pathway for the vestibulo-ocular reflex arc for adaptive control, and that the modification i...

The Adaptive Effects Of Virtual Interfaces: Vestibulo-Ocular Reflex and Simulator Sickness

This study aimed to examine the vestibulo-collic reflex (VCR) and linear vestibulo-ocular (lVOR) their correlation with brain lesions in pediatric-onset multiple sclerosis (POMS). The group consisted of 17 patients (34 ears) POMS (mean age 18.73 ± 2.02, mean at disease onset 14.64 1.36 years), control included 11 age-matched healthy subjects (22 ears). Ocular cervical Vestibular Evoked Myogenic...