[Early auditory processing of speech in prelingually-deafened children with cochlear implants based on event-related potentials].
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
; 59(7): 705-713, 2024 Jul 07.
Article
in Zh
| MEDLINE
| ID: mdl-39107118
ABSTRACT
Objective:
To investigate the early auditory discrimination of vowels, consonants and lexical tones in prelingually-deafened children with cochlear implants (CI) using auditory event-related potentials.Methods:
Nineteen prelingually-deafened CI children and 19 normal hearing (NH) children were recruited in this study. A multi-deviant oddball paradigm was constructed using the monosyllable/ta1/as the standard stimulus and monosyllables/tu1/,/te1/, /da1/,/ra1/,/ta4/and/ta2/as the deviant stimuli. The event-related potentials evoked by vowel, consonant and lexical tone contrasts were recorded and analyzed in the two groups.Results:
NH children showed robust mismatch negativities (MMNs) to vowel, consonant and lexical tone contrasts (P<0.05), whereas CI children only showed positive mismatch responses (pMMRs) and P3a responses to the vowel (P<0.05) and consonant contrasts (P<0.05) and no significant event-related potential to the lexical tone contrasts (P>0.05). The longer pMMR and P3a peak latencies (P<0.01) but similar amplitudes (P>0.05) were found in CI children than in NH children. CI children showed weaker phase synchronization of θ oscillations than NH children (P<0.05). The duration of CI use was positively correlated with the scores of Categories of Auditory Performance (CAP) (P=0.004), Speech Intelligibility Rate (SIR) (P=0.044) and Meaningful Auditory Integration Scale (MAIS) (P=0.001) in CI children.Conclusions:
Prelingually-deafened CI children can process vowels and consonants at an early stage. However, their ability of processing speech, especially lexical tones, is still more immature compared with their NH peers. The event-related potentials could be objective electrophysiological indicators reflecting the maturity of CI children's auditory speech functions. Long-term CI use is beneficial for prelingually-deafened children to improve auditory and speech performance.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Speech Perception
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Cochlear Implants
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Deafness
/
Evoked Potentials, Auditory
Limits:
Child
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Child, preschool
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Female
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Humans
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Male
Language:
Zh
Journal:
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Year:
2024
Document type:
Article
Affiliation country:
China
Country of publication:
China