唇读对听障儿童语音识别的帮助作用

目的：运用 McGurk 效应范式材料，探究唇读对听障儿童语音识别的帮助作用。方法实验组选择双耳重度语前聋且双耳接受助听器补偿的儿童36例（10～12岁，平均11．82±1．54岁），对照组为听力正常儿童36例（10～13岁，平均11．23±1．75岁）。McGurk 效应范式测听材料由音频和视频组成，音频包括／ba／、／da／、／bi／、／di／、／bu／、／du／6个刺激音，视频内容为6个音发音时的完整图像资料，经软件处理，在纯听、视听一致、视听不一致三种条件下，测试两组受试者的听觉反应正确率。结果实验组在纯听、视听一致、视听不一致条件下的听觉反应正确率分别为71．23％±19．20％、96．13％±7．10％、11．12％±16．20％，对照组分别为93．15％±10．02％、96．21％±11．12％、54．03％±23．41％，两组受试者听觉反应正确率均依次降低。视听不一致条件下测听时，正常儿童听觉反应所占比例（54．04％±23．23％）显著高于听障儿童（11．47％±16．32％）（P ＜0．05）。结论视听结合是最佳聆听条件，唇读对听障儿童语音识别有帮助作用。

The Role of Lip-Reading for Hearing-impaired Children in Phonetic Identification

Objective Use McGurk effect paradigm materials to explore the role of lip-Reading for hearing-impaired children in phonetic identification.Methods Thirty-six severe prelingually hearing-impaired children and thirty-six normal healthy children(binaural PTA≤20 dB HL)were recruited in the study.The test material was composed of audio and video,including/ba/,/da/,/bi/,/di/,/bu/,/du/six stimulation sounds which were video recorded as pronounced.Under 3 different conditions,the two groups were evaluated for the accuracy of audi-tory responses.Results The accuracy of auditory responses of hearing-impaired children group was 0.71 ±0.19, 0.96±0.07,0.11 ±0.16 for auditory-only mode,audio -visual consistent mode and audio -visual inconsistent mode,respectively,0.93±0.10,0.96±0.11,0.54±0.23 for normal hearing children in auditory-only mode,audi-o-visual consistent mode and audio-visual inconsistent mode,respectively.Conclusion The Audio-visual con-sistent mode is the best one and the lip-reading can help hearing-impaired children in phonetic identification.