Vestibular Activation by Sound in Human
Journal Title: Scholars Journal of Applied Medical Sciences - Year 2014, Vol 2, Issue 6
Abstract
It has been established that the seismic sensitivity of the human vestibular system exceeds that of the cochlea for low-frequencies. The objective of this work is to determine spurious low frequency air bone gap (slABG) observed in some patients with severe sensorineuronal hearing loss (sSNHL) is due to vestibular otolith organ perception. Study design was Cross-sectional study. Twenty normal volunteers and twenty age-matched patients with sSNHL were included in this study. The participants were undergone comprehensive audiologic tests, cervical vestibular-evoked myogenic potentials (cVEMPs), and thin-sliced computerized tomography scans (CT) at the audiology department of Hamadan University of Medical Sciences, Iran. The observed slABG in the patients group was disappeared at frequencies over 1000Hz. Mean value for slABG was 38.7 dB, 29.3 dB, 20.4 dB and 13.9 dB for frequencies of 250, 500, 750 and 1000 HZ, respectively. We observed twenty three ears with sSNHL showed slABG>10 dB and abnormal cVEMPs (affected). Seventeen ears without slABG>10dB had normal cVEMPs (unaffected). Normal group had normal cVEMPs. None of the patients showed Tullio sign or noise- pressure-induced nystagmus, or third window type symptoms during exam and testing periods. All CT were normal. Statistical analysis of the peaks latency and amplitude of cVEMPs among three groups revealed significant differences (P = 0.039, one-way ANOVA test, Tukey HSD). Higher threshold for bone-conduction at low-frequencies in the ears with SSNHL may be due to stimulation of the otolith organs. We assumed that the observed slABG is not due to vibrational sensation. Keywords: Vestibular Evoked Myogenic Potentials, Sensorineural Hearing Loss, Vestibule.
Authors and Affiliations
Seyede Faranak Emami
Keywords
Related Articles
- EP ID EP379099
- DOI -
- Views 53
- Downloads 0
Evaluation of Creatine Kinase as A diagnostic Tool for Thyroid Disorders
Abstract: There is evidence of opposite relationship between creatine kinase and thyroid dysfunction disorders. This study aimed to evaluate serum CK level in hypothyroidism and hyperthyroidism patients and find its corr...
Concept of Ageing and its Management with Rasayan Therapy
Abstract: Ayurveda the 'science of human life' deals with physical, psychological as well as spiritual well being of an individual. The desire to live long be one of the basic instincts has been common to all living crea...
Early Closure of High Output Stoma (Jejunostomy): A Case Series
The main aim is to present our clinical experience of early closure of high output stoma (jejunostomy). The methods were three patients had been taken in the study, in which jejunostomy was formed in the emergency laparo...
A Rare Case of Primary Tuberculous Mastoiditis with Meningitis
Abstract: Tuberculosis of middle ear is a comparatively rare entity seen in association with or secondary to pulmonary tuberculosis. Primary tuberculous otitis media is a rare disease and constitutes 0.05% to 0.09% of ch...
Comparsion Visual Acuity and Macula Thickening in Macula Edema due Brunch Retinal Vein Occlusion with Intravitreal Injection of Tissue Plasminogen Activator and Avastin with Avastin Alone
The purpose of the study was to compare the effectiveness of intravitreal injection of tissue plasminogen activator and avastin with avastin on macular thickening and visual acuity in macular edema due to branch Retinal...