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Cross-Frequency Integration for Consonant and Vowel Identification in Bimodal Hearing.

Purpose: Improved speech recognition in binaurally combined acoustic-electric stimulation (otherwise known as bimodal hearing) could arise when listeners integrate speech cues from the acoustic and electric hearing. The aims of this study were (a) to identify speech cues extracted in electric hearin...

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Published in:Journal of Speech, Language & Hearing Research Vol. 54; no. 3; pp. 959 - 981
Main Authors: Kong, Ying-Yee, Braida, Louis D.
Format: Article
Published: American Speech-Language-Hearing Association June 2011
Subjects:
Prompts (Psychology)
Cochlear implants
Speech perception
Deaf people
Online Access:View this record in EBSCOhost
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        10924388
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      dt: June 2011
      vid: 54
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      pub: American Speech-Language-Hearing Association
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        508435509
        10.1044/1092-4388(2010/10-0197)
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        atl: Cross-Frequency Integration for Consonant and Vowel Identification in Bimodal Hearing.
      aug:
        au:
          Kong, Ying-Yee
          Braida, Louis D.
      su:
        Prompts (Psychology)
        Cochlear implants
        Speech perception
        Deaf people
      sug:
        subj:
          Prompts (Psychology)
          Cochlear implants
          Speech perception
          Deaf people
      ab: Purpose: Improved speech recognition in binaurally combined acoustic-electric stimulation (otherwise known as bimodal hearing) could arise when listeners integrate speech cues from the acoustic and electric hearing. The aims of this study were (a) to identify speech cues extracted in electric hearing and residual acoustic hearing in the low-frequency region and (b) to investigate cochlear implant (CI) users' ability to integrate speech cues across frequencies. Method: Normal-hearing (NH) and CI subjects participated in consonant and vowel identification tasks. Each subject was tested in 3 listening conditions: CI alone (vocoder speech for NH), hearing aid (HA) alone (low-pass filtered speech for NH), and both. Integration ability for each subject was evaluated using a model of optimal integration—the PreLabeling integration model (Braida, 1991). Results: Only a few CI listeners demonstrated bimodal benefit for phoneme identification in quiet. Speech cues extracted from the CI and the HA were highly redundant for consonants but were complementary for vowels. CI listeners also exhibited reduced integration ability for both consonant and vowel identification compared with their NH counterparts. Conclusion: These findings suggest that reduced bimodal benefits in CI listeners are due to insufficient complementary speech cues across ears, a decrease in integration ability, or both. Reprinted by permission of the publisher.
      pubtype: Academic Journal
      doctype: Article
      src: R
    language: English
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