Objective: To determine the relationship of sensori neural hearing loss and surgery for chronic otitis media. Methodology: This study was designed as a clinical trial on 90 patients with chronic otitis media (COM), who were admitted in hospital for Tympanoplasty and Mastoidectomy who were selected for the study. A pre and post, bone conduction hearing test was performed in frequencies 250 to 40...

Overexposure to intense sound can cause temporary or permanent hearing loss. Postexposure recovery of threshold sensitivity has been assumed to indicate reversal of damage to delicate mechano-sensory and neural structures of the inner ear and no persistent or delayed consequences for auditory function. Here, we show, using cochlear functional assays and confocal imaging of the inner ear in mous...

objective: mumps infection is endemic in iran and mumps parotiditis is a common disease in iranian children. there has been a dramatic decrease in the worldwide incidence of mumps since the introduction and use in 1968 of the very effective and inexpensive mumps vaccine. in iran probably due to a higher percentage of unvaccinated young persons material& methods: this descriptive case-series stu...

Our sensory systems are remarkable in several respects. They are extremely sensitive, they each perform more than one function, and they interact in a complementary way, thereby providing a high degree of redundancy that is particularly helpful should one or more sensory systems be impaired. In this article, the problem of dual hearing and vision loss is addressed. A brief description is provid...

Thiamine-responsive megaloblastic anemia (TRMA) is a clinical triad characterized by megaloblastic anemia, non-autoimmune diabetes mellitus, and sensory-neural hearing loss. Mutations in the thiamine transporter gene, solute carrier family 19, member 2 (SLC19A2), have been associated with TRMA. Three pediatric patients from a large consanguineous Iranian family with hyperglycemia, anemia, and h...

OBJECTIVES In mammals, cochlear hair cell loss is irreversible and may result in a permanent sensorineural hearing loss. Secondary to this hair cell loss, a progressive loss of spiral ganglion neurons (SGNs) is presented. In this study, we have investigated the effects of neural-induced human mesenchymal stem cells (NI-hMSCs) from human bone marrow on sensory neuronal regeneration from neomycin...

We review evidence for cross-modal cortical re-organization in clinical populations with hearing loss. Cross-modal plasticity refers to the ability for an intact sensory modality (e.g., vision or somatosensation) to recruit cortical brain regions from a deprived sensory modality (e.g., audition) to carry out sensory processing. We describe evidence for cross-modal changes in hearing loss across...

background and aim : the quick speech in noise (q-sin) test have been designed to evalu­ate individuals’ ability to recognize speech in noise. this study established to evaluate the test-retest reliability and equivalency of the five test lists of the persian q-sin test in subjects with sensory hearing loss (shl) and normal hearing individuals. methods : this cross-sectional study was per­forme...

Degraded sensory experience during critical periods of development can have adverse effects on brain function. In the auditory system, conductive hearing loss associated with childhood ear infections can produce long-lasting deficits in auditory perceptual acuity, much like amblyopia in the visual system. Here we explore the neural mechanisms that may underlie "amblyaudio" by inducing reversibl...

Background and Aims: Sudden sensorineural hearing loss (SSNHL) is a common disorder diagnosed in otologic and audiologic practices. Its accompanying symptoms include tinnitus, dizziness, and permanent hearing loss affecting negatively the life quality of affected patients. Many viruses have been involved in the occurrence of SSNHL especially Herpes simplex virus (HSV) type I and II. This study ...