Cantonese tone perception ability of cochlear implant children in comparison with normal-hearing children

Kathy Y.S. Lee*, C. A. Van Hasselt, Sung Nok CHIU, Dilys M.C. Cheung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

86 Citations (Scopus)

Abstract

Background and Objective: Cantonese is a tone language. A change in the fundamental frequency pattern within the same phonemic segment causes a change in the lexical meaning. The present study examined the Cantonese tone perception ability of cochlear implant children in comparison with normal-hearing children. It was hypothesized that cochlear implant children follow a similar pattern of tone perception development, as do normal children. Method: 225 normal-hearing and 15 hearing-impaired children with cochlear implants were recruited. The high level (tone 1), high rising (tone 2) and low falling (tone 4) were the target tones examined. The three tones were arranged into tone pairs for identification. Each pair shared exactly the same segmental information but differed only in tones (e.g. /sy/ in tones 1 and 2 meaning 'book' and 'mouse', respectively). Subjects were required to point to the corresponding pictures after the live voice presentations. Results: for each tone pair, each subject was awarded a score representing the proportion of stimuli pairs that were correctly discriminated by the subject. The average scores in the normal-hearing and hearing-impaired groups were 0.92 and 0.64, respectively. The normal group had the lowest average score in tone 2/tone 4 (0.87) while the hearing-impaired group performed the worst in tone 1/tone 2 (0.53) perception between the three tone contrasts. Conclusions: the normal-hearing group performed significantly better than the hearing-impaired group in basic Cantonese tone perception. The pattern of tone perception development of cochlear implant children did not seem to follow that of normal children. Contributing factors on the tone perception performance of the cochlear implant children were subject's age, duration of special training, and durations of wearing the hearing aid and the cochlear implant.

Original languageEnglish
Pages (from-to)137-147
Number of pages11
JournalInternational Journal of Pediatric Otorhinolaryngology
Volume63
Issue number2
DOIs
Publication statusPublished - 25 Apr 2002

Scopus Subject Areas

  • Pediatrics, Perinatology, and Child Health
  • Otorhinolaryngology

User-Defined Keywords

  • Cantonese
  • Child language development
  • Cochlear implant
  • Hearing-impaired children
  • Tone perception

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