The aims were to determine the benefit of bilateral cochlear implantation in a 20 years old patient implanted in Croatia on hearing and speech development. The male patient, after 10 years of deafness, got cochlear implants Med-EL Combi 40+ on both sides in one-stage surgery. The etiology of his deafness was posttraumatic meningitis. Auditory capacity and speech recognition tests were performed...

According to the generally accepted theory of mammalian cochlear mechanics, the fluid in the cochlear scalae interacts with the elastic cochlear partition to generate transversely oscillating displacement waves that propagate along the cochlear coil. Using a computational model of cochlear segments, a different type of propagating wave is reported, an elastic propagating wave that is independen...

Although protective effects of the cochlea's efferent feedback pathways have been well documented, prior work has focused on hair cell damage and cochlear threshold elevation and, correspondingly, on the high sound pressure levels (>100 dB SPL) necessary to produce them. Here we explore the noise-induced loss of cochlear neurons that occurs with lower-intensity exposures and in the absence of p...

AIMS We sought to develop techniques for visualizing cochlear blood flow in live mammalian subjects using fluorescence microendoscopy. BACKGROUND Inner ear microcirculation appears to be intimately involved in cochlear function. Blood velocity measurements suggest that intense sounds can alter cochlear blood flow. Disruption of cochlear blood flow may be a significant cause of hearing impairm...

Patients with chronic renal failure may develop sensorineural hearing loss. Cochlear implantation has rarely done after organ transplantation. Herein, we report on a 33-year-old kidney transplantation recipient who underwent cochlear implantation for her progressive sensorineural hearing loss in Khalili Hospital Cochlear Implant Center, affiliated to Shiraz University of Medical Sciences. The i...

This study provides a detailed analysis of the appearances and distributions of neurons projecting from one cochlear nucleus to the other. Injections of wheatgerm agglutinin conjugated to horseradish peroxidase were made into ventral or dorsal cochlear nucleus of the guinea pig. Retrogradely labeled cells in the opposite cochlear nucleus were examined and quantified. Three major categories of l...

Recalcitrant chronic infections of implanted medical devices are often linked to the presence biofilms. The prevention and treatment device-associated is a major source antibiotic use driver antimicrobial resistance globally. Lowering incidence infection in patients that receive could therefore significantly improve stewardship reduce patient morbidity. Here we determined if modifying design an...

One of the most important findings in cochlear implant research has been the orderly variation in perceptual characteristics produced by intra­ cochlear electrodes in accordance with the tonotopic organization of the cochlea. The electrical signal dimension of electrode position has there­ fore been used extensively for presenting speech information to cochlear implant patients. This paper desc...

performing cochlear implantation in patients with inner ear malformation has always been a matter of dispute. this study was designed to analyze the operative findings,complications, and postoperative performance of patients with inner ear anomalies who underwent cochlear implantation. six patients with inner ear malformations underwent implantation in our academic tertiary referral center from...

BACKGROUND Although cochlear implantation has been almost a standard otological procedure worldwide, it may still create a dilemma for the surgeon in some unusual instances such as Seckel syndrome, aural atresia and posterior fossa arachnoid cyst. CASE REPORT Three extraordinary cases of cochlear implantation were reported. The first case was a case of Seckel syndrome with a cardiac pacemaker...