Objective: To standardize the rotatory chair sinusoidal harmonic acceleration and velocity step tests in adult population. Study Design: Prospective study. Setting: Clinical tertiary care vestibular function test center. Patients: One hundred normal participants (66 male and 34 females without suspected vestibular disorder) evaluated with bithermal binaural caloric and sinusoidal and step-veloc...

INTRODUCTION With aging, the sensory systems suffer an accumulation of degenerative, infectious and/or traumatic processes that may hinder the body balance maintenance. OBJECTIVE To assess the influence of sensory information on static body balance of elderly individuals with vestibular disorders. METHODS Cross-sectional study of elderly individuals with vestibular disorders. The Clinical T...

OBJECTIVE In response to loud clicks, a vestibular evoked potential can be recorded from sternocleidomastoid muscles, called "click evoked myogenic potential" (CEMP). This paper reports on the usefulness of CEMP in the differential diagnosis of acute vertigo of presumed vestibular origin. METHODS CEMP was examined in 40 patients with acute vertigo of vestibular origin (26 with acute periphera...

UNLABELLED The vestibular evoked myogenic potential (VEMP) test is a relatively new diagnostic tool that is in the process of being investigated in patients with specific vestibular disorders. Briefly, the VEMP is a biphasic response elicited by loud clicks or tone bursts recorded from the tonically contracted sternocleidomastoid muscle, being the only resource available to assess the function ...

The vestibular evoked myogenic potential (VEMP) test is a relatively new diagnostic tool that is in the process of being investigated in patients with specific vestibular disorders. Briefly, the VEMP is a biphasic response elicited by loud clicks or tone bursts recorded from the tonically contracted sternocleidomastoid muscle, being the only resource available to assess the function of the sacc...

Vestibular-evoked myogenic potentials (VEMPs) are proposed as a reliable test to supplement the current vestibular test battery by providing diagnostic information about saccular and/or inferior vestibular nerve function. VEMPs are short-latency electromyograms (EMGs) evoked by high-level acoustic stimuli and recorded from surface electrodes over the tonically contracted sternocleidomastoid mus...

The diagnosis of patient disorders in modern neurootological centers has to include not only history and examination but objective and quantitative tests. In this study, we stress the importance of a short but significant test used to study vestibular function--the vestibular test of balance. The most common and widespread technique used to evaluate a patient's equilibrium in static condition i...

cis-2-Pentenenitrile, an intermediate in the synthesis of nylon and other products, causes permanent behavioral deficits in rodents. Other low molecular weight nitriles cause degeneration either of the vestibular sensory hair cells or of selected neuronal populations in the brain. Adult male Long-Evans rats were exposed to cis-2-pentenenitrile (0, 1.25, 1.50, 1.75, or 2.0mmol/kg, oral, in corn ...

UNLABELLED Vestibular evoked myogenic potentials are vestibulocervical reflexes resulting from sacculus stimulation with strong intensity sounds. Normality parameters are necessary for young normal individuals, using low frequency stimuli, which configure the most sensitive region of this sensory organ. AIM To establish vestibular evoked myogenic potential standards for low frequency stimulat...

UNLABELLED Hormonal disorders in the menstrual cycle can affect labyrinthine fluid homeostasis, causing balance and hearing dysfunctions. STUDY DESIGN Clinical prospective. AIM compare the results from vestibular tests in young women, in the premenstrual and postmenstrual periods. MATERIALS AND METHODS twenty women were selected with ages ranging from 18 to 35 years, who were not using an...