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Comparing Sound-Field Speech-Auditory Brainstem Response Components Between Cochlear Implant Users With Different Speech Recognition in Noise Scores Publisher



Jarollahi F1 ; Valadbeigi A1 ; Jalaei B1 ; Maarefvand M1 ; Motasaddi Zarandy M2 ; Haghani H3 ; Shirzhiyzn Z4
Authors
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Authors Affiliations
  1. 1. Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
  2. 2. Cochlear Implant Center and Department of Otorhinolaryngology, Amir Aalam Hospital, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran

Source: Iranian Journal of Child Neurology Published:2022


Abstract

Objectives Many studies have suggested that cochlear implant (CI) users vary in terms of speech recognition in noise. Studies in this field attribute this variety partly to subcortical auditory processing. Studying speech-Auditory Brainstem Response (speech-ABR) provides good information about speech processing; thus, this work was designed to compare speech-ABR components between two groups of CI users with good and poor speech recognition in noise scores. Materials & Methods The present study was conducted on two groups of CI users aged 8-10 years old. The first group (CI-good) consisted of 15 children with prelingual CI who had good speech recognition in noise performance. The second group (CI-poor) was matched with the first group, but they had poor speech recognition in noise performance. The speech-ABR test in a sound-field presentation was performed for all the participants. Results The speech-ABR response showed more delay in C, D, E, F, O latencies in CI-poor than CI-good users (P <0.05), meanwhile no significant difference was observed in initial wave (V(t=-0.293, p= 0.771 and A (t=-1.051, p= 0.307). Analysis in spectral-domain showed a weaker representation of fundamental frequency as well as the first formant and high-frequency component of speech stimuli in the CI users with poor auditory performance. Conclusion Results revealed that CI users who showed poor auditory performance in noise performance had deficits in encoding the periodic portion of speech signals at the brainstem level. Also, this study could be as physiological evidence for poorer pitch processing in CI users with poor speech recognition in noise performance. © 2022, Iranian Child Neurology Society. All rights reserved.
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