الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The CI is sensory device that bypasses destroyed or missing hair cells in the cochlea and electrically triggered remaining cochlear neural elements in ears largely impaired to respond effectively to acaustic amplification
The electrically evoked compound action potential (ECAP) is principally used to detect the cochlear nerve function for cochlear implants recipients via recording the synchronous responses of the 8th nerve fibers to electrical stimulation. In addition, applying ECAPs involves the assessment of electrode-neuron interface quality, monitor recipient progress after operation, and offer some reference data concerning speech processor programming.
The current study aimed to determine the extent to which the slope of electrically evoked compound action potential AGF is correlated with speech perception performance in a 20 CI prelingually deafened children.
The study results showed that there was no significant correlation between slope of ECAP and performance in speech test either monosyllabic phonetically balanced kindergarten (PB-KG2) speech test, bisyllabic phonetically balanced kindergarten (PB-KG1) speech test or word intelligibility by picture identification (WIPI) test. Also statistically significant correlation was found between the threshold of ECAP and the performance in speech tests only in apical and mid electrodes in group 2, otherwise there was no statistically significant correlation found in other groups.
So, according to our results, the slope of ECAP can not be used as a predictor of speech performance in CI patients.