الفهرس 
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Abstract
For several years, a lot of researches were conducted to compare the pitch perception ability between the normal persons and the patients with cochlear implants. Although, this comparison between the electrical and acoustic stimulation had not been identified yet, a large number of CI children were found to suffer from variable deficits in pitch discrimination.
The aim of this work was to compare between pitch discrimination and its associated language development in normal children, children with cochlear implant and children with hearing aids to know which prostheses is better and more useful to the patient.
The study included 45 children aged from 10 to 18 years divided as follow: 15 children with normal hearing, 15 children with HA as well as 15 children with CI.
The protocol of the study included: Pitch discrimination assessment through pitch discrimination test and just noticeable difference test and language evaluation through psychometric evaluation and language assessment. While audiological assessment consisted of tympanometry and pure tone audiometry to assess peripheral hearing.
The resulting data suggested that children with either CI or HA had less pitch discrimination ability than normal children with more deficit in the CI group than the HA group and with more accurate language assessment than the HA group and that could tell us that the benefit that CI users got through better accessibility to high frequencies outweigh the deficit in pitch discrimination.