Relationship Between Auto NRT and Behavioural T & C Levels With the Nucleus Freedom Cochlear Implant

2014-08-27 03:44:21 | BioPortfolio


Cochlear implants require programming on an individual basis to provide appropriate levels of electrical stimulation. This program, or "map", is placed in the speech processor of the cochlear implant. Success of implantation largely depends on the adequacy of this map. Cochlear implant fitting remains a difficult challenge in congenitally or pre-linguistically deafened children. It requires competence of experienced audiologists with expertise in behavioral techniques for hearing function assessment.Our goal is to establish the offset correlation between objective measurements (NRT and ESRT) and the behavioral measurements of T & Cs in different stimulation rates in the Freedom SP System.


An open trail. The implantees will go through their routine programming sessions after implantation, the specified data will be collected and analyzed in order to establish the offset correlation which we seek for.

Study Design

Allocation: Non-Randomized, Control: Uncontrolled, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment


Hearing Loss


Cochlear Implant


Bnai Zion MC




Bnai Zion Medical Center

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:44:21-0400

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Medical and Biotech [MESH] Definitions

Hearing loss due to disease of the AUDITORY PATHWAYS (in the CENTRAL NERVOUS SYSTEM) which originate in the COCHLEAR NUCLEI of the PONS and then ascend bilaterally to the MIDBRAIN, the THALAMUS, and then the AUDITORY CORTEX in the TEMPORAL LOBE. Bilateral lesions of the auditory pathways are usually required to cause central hearing loss. Cortical deafness refers to loss of hearing due to bilateral auditory cortex lesions. Unilateral BRAIN STEM lesions involving the cochlear nuclei may result in unilateral hearing loss.

Gradual bilateral hearing loss associated with aging that is due to progressive degeneration of cochlear structures and central auditory pathways. Hearing loss usually begins with the high frequencies then progresses to sounds of middle and low frequencies.

The cochlear part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). The cochlear nerve fibers originate from neurons of the SPIRAL GANGLION and project peripherally to cochlear hair cells and centrally to the cochlear nuclei (COCHLEAR NUCLEUS) of the BRAIN STEM. They mediate the sense of hearing.

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An autosomal dominant disorder manifested by various combinations of preauricular pits, branchial fistulae or cysts, lacrimal duct stenosis, hearing loss, structural defects of the outer, middle, or inner ear, and renal dysplasia. Associated defects include asthenic habitus, long narrow facies, constricted palate, deep overbite, and myopia. Hearing loss may be due to Mondini type cochlear defect and stapes fixation. (Jablonski's Dictionary of Syndromes & Eponymic Diseases, 2d ed)

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