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    Auditory perception in pediatric cochlear implant users with cochlear nerve hypoplasia
    (Elsevier Ireland Ltd, 2022) Uzun, Erva Degirmenci; Batuk, Merve Ozbal; D'Alessandrob, Hilal Dincer; Sennaroglu, Gonca
    Objectives: The objectives of this study were to assess auditory perception and speech intelligibility outcomes in children with cochlear nerve (CN) hypoplasia who received cochlear implants (CIs) using Categories of Auditory Performance II (CAP II) and Speech Intelligibility Rating (SIR) scales.Methods: In total, 40 children who received CI and who were aged between 3 and 18 years were included in this study. The study group included 20 children with CN hypoplasia at least one ear, while the control group included 20 children with normal cochleas and cochlear nerve structures. All children in the study and control groups who participated were evaluated using the CAP II and the SIR scale. Demographic data were collected.Results: Significant differences were found between the study and control groups' CAP II and SIR scores (p < 0.001). It was found that CAP II scores were positively correlated with SIR scores in the study (r = 0.743, p < 0.001) and control (r = 0.601, p < 0.001) groups. In the study group, significant negative correlations were found between SIR scores and age at implantation (r =-0.674, p = 0.004) and between CAP II scores and age at implantation (r = 0.751, p = 0.003). In the control group, a significant negative correlation was found between age at implantation and CAP II scores (r =-0.805, p = 0.001). Similarly, a significant negative correlation was found between age at implantation and SIR scores (r =-0.702, p = 0.007).Conclusion: Even for children with severe inner ear malformation and CN hypoplasia, CI is an effective treatment modality for auditory perception and speech production. However, it should be noted that CN hypoplasia affects auditory performance negatively in children with CI.
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    Öğe
    Phonological development of children with cochlear implants
    (Taylor & Francis Ltd, 2025) Ceyhan, Aysenur Kucuk; Sennaroglu, Gonca; Yucel, Esra; San, Iclal
    Phonological processes are examples of normal simplified articulation seen in all children during the language and speech sound acquisition phase, and their frequency decreases and disappears with age. They are of concern when they are used beyond the expected time frames or when the simplification processes do not follow the typical substitutions. The aim of this study was to examine the phonological development and consonant acquisition of Turkish-speaking children with CI and compare the results with normative data. Comparisons were made according to the duration of CI use and also according to the age of CI. Therefore, 52 participants were analysed, first divided into 4 groups according to duration of CI use and then into 2 groups according to age of CI. Phonology skills were evaluated with the Bankson-Bernthal Phonology Test. In children with CI, 1373 consonant production errors were detected. There were 28 phonological processes corresponding to these errors. The most common phonological processes were Initial Consonant Deletion, Cluster Reduction, Final Consonant Deletion, Vowel Lengthening, Devoicing, Assimilation, Nasalization and Dentalization. The most errors occurred in fricative and voiced sounds, and the fewest errors occurred in bilabial consonants (/b,/p,/m/). This study demonstrated that CI performed before the age of three years and continued use of CI over an extended period of time have beneficial impacts on the development of phonological skills. This study is thought to enhance the existing research on the acquisition of consonants and phonological development in Turkish-speaking children with CI, a topic that currently lacks sufficient information.