【摘要】 目的观察腭裂术后腭咽闭合不全(VPI)患者的辅音发声特点。方法腭裂术后VPI患者56例(VPI组,年龄5～18岁),手术史>3 a且没有进行语音训练;健康儿童20例(对照组,年龄5～16岁)。分析两组辅音[b]、[d]、[g]、[z]、[x]的充值条和擦音乱纹出现率,以及语句中[ti]的嗓音起声时间(VOT)和[ma]、[ba]的过渡音征。结果 VPI组辅音冲直条和擦音乱纹出现率显著低于对照组(P均<0.05);VPI组的VOT接近零甚至成为负值,与对照组相比,P<0.01;两组[ba]的正渡率差异显著(P<0.05)。结论腭裂术后VPI患者的辅音发声特点为辅音脱落或弱化、清辅音浊化、口辅音鼻化等。更多还原

【Abstract】 Objective To observe the acoustic characteristics of consonants in patients with post-palatoplasty velopharyngeal incompetence(VPI).Methods 56 patients with post-palatoplasty VPI(VPI group,age 5~18 years) were chosen,all of which underwent palatoplasty above 3 years ago and no speech therapy,contrasted by 20 normal children(control group,age 5~16 years).The frequency of strike and fills of consonants,,[x],voice onset time(VOT) of in sentence and the phonemes transition tendency of and were analyzed and compared between two groups.Results The frequency of strike and fills of consonants in patients decreased significantly compared to the control group(P<0.05).VOT of VPI group,almost zero or even negative numbers,had significant difference with the control group(P<0.05).There was significant difference in the rate of positive transition tendency of between two groups(P<0.05).Conclusions The acoustic characteristics of consonants in patients with post-palatoplasty VPI are the consonants weak or loss,voiceless consonants transforming to voiced consonants,oral consonants nasalization.更多还原