Visual gravitational vertical perception in peripheral vestibular hypofunction
| Autor: | Cecilia San Roman, Gonzalo Sotta, Alejo Suarez, Dario Geisinger, Hamlet Suarez, Enrique Ferreira |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Adult
Male medicine.medical_specialty Vertical perception Audiology Dizziness Chronic dizziness Young Adult Vestibular hypofunction Internal medicine medicine Humans Vestibular Neuronitis Meniere Disease Vestibular system Receiver operating characteristic business.industry General Medicine Middle Aged medicine.disease Peripheral Otorhinolaryngology Rise time Case-Control Studies Cardiology Visual Perception Female business Meniere's disease |
| Zdroj: | Acta oto-laryngologica. 132(4) |
| ISSN: | 1651-2251 |
| Popis: | Rise time in the estimation of the gravitational vertical in the head tilt response (HTR) test is increased in patients with peripheral vestibular lesions and residual chronic dizziness.Assessment of the perception of the gravitational vertical in patients with peripheral vestibular lesions through the HTR.HTR was studied in 12 patients with peripheral vestibular lesion, 8 clinically with chronic dizziness and 4 without it; 23 normal subjects were studied as control group. Two parameters of the HTR were assessed, rise time and steady-state error to characterize a dynamical system step response. The Kolmogorov-Smirnov test (alpha = 5%) was used to verify normal distribution (steady-state error, p = 0.53; rise time, p = 0.88). The three sigma ellipse was calculated for the control group. ROC curves were used to measure the sensitivity and specificity of these parameters.Rise time showed increased values in peripheral vestibular lesion patients with chronic dizziness. Two-dimensional analysis (rise time vs steady-state error) allows a better discrimination between patients with peripheral vestibular hypofunction with chronic dizziness and the rest of the studied population. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|