MATERIALS and METHODS: Forty patients with complaints of vertigo and dizziness volunteered to be included in the study. All patients who were included the study were treated at the other medical centers. The patients were divided into two Groups. Patients in the first Group were given betahistine 24 mg three times per day. During this treatment, caloric testing was performed, and the dose was i...

Head-shaking nystagmus. Head-Shaking Nystagmus (HSN) is a latent spontaneous vestibular nystagmus provoked by rapid passive head shaking around a vertical axis. HSN is not specific in distinguishing peripheral hypofunction from more central vestibular imbalances. This test is an excellent bedside test for detecting unilateral vestibular hypofunction but further rotatory and caloric testing will...

Introduction: High calorie diet is becoming the most important health problem in most developed western societies. Diets with high caloric contents such as high fructose intake are associated with increasing risk of type two diabetes (T2D) and insulin resistance (IR). However, large differences have been seen in the dose and duration of fructose consumption to induction of T2D. Interest to deve...

Materials and Methods: This prospective study included three groups, 38 patients with Meniere’s disease (41 ears), 30 patients with cochlear hearing loss other than Meniere’s disease (40 ears) and 25 healthy subjects (40 ears). Tympanic membrane ECoG (click and tone-burst evoked) and caloric test were performed. Forty one ears with Meniere’s disease were categorized into definite (28 ears) and ...

This study investigated the effects of interstimulus interval on slow phase velocity (SPV) to ipsilateral warm air caloric stimulation in normal subjects . Results suggest that about 3 minutes should intervene between the offset of one irrigation and the onset of the second irrigation . This finding supports the hypothesis that carryover effects are likely only when nystagmus from the preceding...

BACKGROUND Determining the nerve of origin for vestibular schwannoma (VS), as a method for predicting hearing prognosis, has not been systematically considered. The vestibular test can be used to investigate the function of the superior vestibular nerve (SVN) and the inferior vestibular nerve (IVN). This study aimed to preoperatively distinguish the nerve of origin for VS patients using the ves...

The reversal phase of caloric nystagmus is provoked when the lateral semicircular canal in a patient is reoriented from a vertical to a horizontal plane at the cessation of the caloric first phase, which we called the provoked caloric second phase. In investigating the clinical significance of the provoked caloric second phase, we recruited 102 vertiginous patients who had measurable caloric re...

The dynamic response properties of horizontal vestibulo-ocular reflex (VOR) were characterized in 216 human subjects ranging in age from 7 to 81 y. The effects of aging on VOR dynamics and parameter distributions that describe VOR responses to caloric and to sinusoidal rotational stimuli were determined in a putatively normal population. Caloric test parameters showed no consistent trend with a...