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Home > Archives > Volume 20, No 11 (2022) > Article

DOI: 10.14704/nq.2022.20.11.NQ66045

Effect of Cochlear Implant Electrode Depth of Insertion on Speech Comprehension and sound Quality

Amira Mohamed Maged El-Shennawy MD, Ahmed Mohamad Khater MD, Tarek Mohamad El-Dessouky MD, Ahmed Mohamed Mohamed MSc., Eman Mostafa Basiouny MD


Introduction: Studies on cochlear implants (CI) have suggested that speech recognition is optimized when the frequency information is presented to the normal acoustic tonotopic cochlear location. Frequency-place maps that are shifted or distorted relative to the normal tonotopic map reduce speech recognition. However, if an electrode array is not fully inserted, the lowest frequency represented by the most apical electrode of that array may be 2000 Hz or higher. Aim of work: analysis of the influence of insertion depth and electrode length on the speech comprehension of cochlear implanted patients after 3 and 6 months of device use.


Cochlear Implant, Electrode Depth, Speech Comprehension, Sound Quality, Nijmegen Cochlear Implant Questionnaire (NCIQ).

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