introduction: occupational exposure to excessive noise is commonly encountered in a large number of industries in iran. this study evaluated the hearing threshold and hearing loss in meybod tile factory workers. methods: this cross-sectional study included 371 tile factoryworkers during summer and autumn of 2005. current noise exposure was estimated using sound level meter .a specially formatte...

In clinical practice, tinnitus is a quite common symptom in patients with chronic acoustic trauma, and noise-induced hearing loss (NIHL). A review of the current state of knowledge on tinnitus in relation to noise exposure and hearing loss has been recently (Poole, 2010) published by the UK Health & Safety Executive. 252 publications were reviewed. The prevalence of tinnitus in populations expo...

BACKGROUND Hearing capability plays a principal role on human's communication. Noise-induced hearing loss (NIHL) caused by exposure to high noise levels is a serious socio-economic problem in modern societies. NIHL can either be reversible, resulting in a temporary threshold shifts (TTS) or irreversible, resulting in a permanent threshold shifts (PTS). PTS is often confirmed in the time span of...

Dentists are at risk of noise-induced hearing loss (NIHL). Dental treatment equipment has high-intensity noise levels. Occupational levels multi-unit dental clinic higher than private and further increased NIHL. This study aims to develop a noise-reducing appointment system in clinics using duration steps noisemap. Restorative, periodontal, prosthetic procedure were measured clinic. A map was c...

Pathologic mechanisms in cochleae immediately following the onset of noise-induced hearing loss (NIHL) remain unclear. In this study, mice were exposed to 120 dB octave band noise for 2 h induce NIHL. Three hours after exposure, expression levels whole mouse genome analyzed by RNA-seq and DNA microarray. Differentially expressed genes (DEGs) exhibiting >2-fold upregulation or downregulation noi...

Mouse models are key tools for studying cochlear alterations in noise-induced hearing loss (NIHL) and for evaluating new therapies. Stimuli used to induce deafness in mice are usually white and octave band noises that include very low frequencies, considering the large mouse auditory range. We designed different sound stimuli, enriched in frequencies up to 20 kHz ("violet" noises) to examine th...

Prolonged exposure to noise over a period of years generally causes permanent damage to the auditoiy nerve and/or its sensory components. This irreversible damage, known as noise-induced hearing loss (NIHL), is the most common occupational disease in the United States today. Workers suffering from NIHL have difficulty understanding human speech and hearing other workplace cues. Despite the use ...

Noise overexposure may induce permanent noise-induced hearing loss (NIHL). The cochlear nucleus complex (CNC) is the entry point for sensory information in the central auditory system. Impairments in gamma-aminobutyric acid (GABA)-mediated synaptic transmission in the CNC have been implicated in the pathogenesis of auditory disorders. However, the role of protein kinase C (PKC) signaling pathwa...

Introduction Estimation of the incidence of noise-induced hearing loss sustained in the course of current operations requires both preand post-deployment pure tone audiometry. In a study of reserve personnel who deployed to Operation Herrick 6, 10% of personnel had good audiometric evidence to support a diagnosis of noise-induced hearing loss and a further 32% had audiograms that suggested it1....