Audiovisual speech perception at various presentation levels in Mandarin-speaking adults with cochlear implants

(1) To evaluate the recognition of words, phonemes and lexical tones in audiovisual (AV) and auditory-only (AO) modes in Mandarin-speaking adults with cochlear implants (CIs); (2) to understand the effect of presentation levels on AV speech perception; (3) to learn the effect of hearing experience o...

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Bibliographic Details
Published in:PloS one 2014-09, Vol.9 (9), p.e107252-e107252
Main Authors: Liu, Shu-Yu, Yu, Grace, Lee, Li-Ang, Liu, Tien-Chen, Tsou, Yung-Ting, Lai, Te-Jen, Wu, Che-Ming
Format: Article
Language:English
Subjects:
Adolescent
Adult
Adults
Audio visual equipment
Audiology
Audiovisual Aids
Biology and Life Sciences
Chinese languages
Cochlea
Cochlear Implants
Deafness
Female
Hearing loss
Hospitals
Humans
Implants
Language
Male
Medicine
Medicine and Health Sciences
Otolaryngology
Pattern recognition
Perception
Phonemes
Rehabilitation
Sensory integration
Speaking
Speech
Speech perception
Speech Perception - physiology
Speech recognition
Transplants & implants
Voice recognition
Young Adult
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Summary:(1) To evaluate the recognition of words, phonemes and lexical tones in audiovisual (AV) and auditory-only (AO) modes in Mandarin-speaking adults with cochlear implants (CIs); (2) to understand the effect of presentation levels on AV speech perception; (3) to learn the effect of hearing experience on AV speech perception. Thirteen deaf adults (age = 29.1±13.5 years; 8 male, 5 female) who had used CIs for >6 months and 10 normal-hearing (NH) adults participated in this study. Seven of them were prelingually deaf, and 6 postlingually deaf. The Mandarin Monosyllablic Word Recognition Test was used to assess recognition of words, phonemes and lexical tones in AV and AO conditions at 3 presentation levels: speech detection threshold (SDT), speech recognition threshold (SRT) and 10 dB SL (re:SRT). The prelingual group had better phoneme recognition in the AV mode than in the AO mode at SDT and SRT (both p = 0.016), and so did the NH group at SDT (p = 0.004). Mode difference was not noted in the postlingual group. None of the groups had significantly different tone recognition in the 2 modes. The prelingual and postlingual groups had significantly better phoneme and tone recognition than the NH one at SDT in the AO mode (p = 0.016 and p = 0.002 for phonemes; p = 0.001 and p
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0107252