Auditory prostheses use implanted electrode arrays that permit stimulation at many sites along the tonotopic axis of auditory neurons. Psychophysical studies demonstrate that measures of implant function, such as detection and discrimination thresholds, vary considerably across these sites, that the across-site patterns of these measures differ across subjects, and that the likely mechanisms un...

OBJECTIVE To evaluate the long-term results and predictive factors of a good outcome with the use of a total ossicular replacement prosthesis in children. DESIGN Retrospective case review. SETTING Tertiary referral center. PATIENTS The study included 114 children (116 ears). INTERVENTIONS A total of 116 ears underwent total ossicular chain reconstruction with a titanium prosthesis. Cart...

OBJECTIVES The objective of this study was to determine the rates of nasalance for total laryngectomized users of a tracheoesophageal voice prosthesis and correlate them with the findings of auditory-perceptual assessment of nasality. METHODS In this study, 25 total laryngectomized users, including 20 men and five women, with a mean age of 63 years old participated. All the participants had a...

rehabilitation of facial defects is a complex task, requiring an individualized design of the technique for each patient. the disfigurement associated with the loss of an eye may result in significant physical and emotional problems. various treatment modalities are available, one of which is the use of implants. although implant-supported orbital prosthesis has a superior outcome, it may not b...

malignancies of the midface result in cosmetic deformities that make maxillofacial prosthesis as an integral part of the treatment plan. facial defects can be devastating in their impact on physical structure and function of the affected individual, leading to potentional compromises in quality of life. reconstruction of nasal defects is a challenge for the prosthodontist because of esthetic an...

The inner ear, which manages our senses of hearing and balance, has mechanosensitive hair cells, which convert vibration into electronic signal to depolarize auditory or vestibular neurons. Inner ear functions depend largely on hair cells, their associated neurons and cochlear lateral wall, and defects in these cells result in hearing loss and deafness. Although some investigations indicated ha...

We propose a phonetically-guided diagnosis of auditory deficiency, which hinges on a carefully constructed corpus of synthetic sounds. Our aim is to complement the diagnosis of sensorineural hearing deficiencies, in order to improve the correction afforded by auditory prosthesis. We first design a vowel corpus, based upon pairs of twoformant, steady-state synthetic French vowels, where the vowe...

The purpose of this work is to investigate the role of three articulatory parameters (tongue position, jaw position and tongue grooving) in the production of /s/. Six normal speakers' speech was perturbed by a palatal prosthesis. The fricative was recorded acoustically and through electromagnetic articulography in four conditions: (1) unperturbed, (2) perturbed with auditory feedback masked, (3...

background and aim: human beings receive a variety of sounds in their everyday lives. these sounds are generated by different sources, and are heard simultaneously or with a small time sequence. a characteristic of the auditory system is its ability to analyze complex sounds, and to make decisions about the source of each constituent part of these sounds. the present study intends to assess nor...

Cochlear implants are the first and until now the only existing prosthesis that can substitute an entire sensory system – the hearing system – nearly completely. After implantation and a period of rehabilitation, most deaf patients are able to use the telephone or listen to the radio with their cochlear implant system. Although top performing cochlear implant subjects understand speech nearly p...