【摘要】 目的:评估人工耳蜗(CI)植入者在噪声环境下的言语识别能力。方法:利用普通话版噪声下言语测试(MHINT)为言语测试工具,选取22例CI受试者,按照MHINT适应性得分规则,首先确定受试者在噪声下识别50%～74%的句子内容(评分规则3),达到该水平则继续进行75%以上难度内容(评分规则2或规则1),否则停止。获得受试个体在噪声下言语识别能力的语句接受阈、言语识别率和PI function曲线。结果:22例受试者中,5例在噪声下识别能力达80%～90%,3例可达60%～70%,7例达到50%,7例未能达到MHINT评分规则3测试。获得15例受试者的PI function并与听力正常人进行比较。结论:MHINT适应性得分规则测试法,可有效地获得CI植入者在噪声下的言语识别能力。与听力正常者相比,CI植入者的PI function显示右移10dB以上,在噪声环境下仍需要更好的信噪比。更多还原

【Abstract】 Objective:To evaluate the abilities speech perception of post-lingual cochlear implant patients by Mandarin Hearing In Noise Test(MHINT),get the performance-intensity function(P-I function).Method:The material was MHINT adults′ version,including 12 lists,20 sentences per list.Twenty-two cochlear implant patients were the subjects,age from 14 to 56.Three adaptive rules were used during the test.Firstly Rule 3 would be done.If subject could finish the test,then Rule 2 and Rule 1 would be used.Got the Reception threshold of sentences and speech recognition score of subjects,then got performance-intensity function(PI function).Result:Among those 22 subjects,5 of them could be tested in all three rules,3 could be tested in Rule 2 and Rule 3,7 of them could be tested with Rule 3,and 7 of the CI users could not be tested even with Rule 3.All of the PI functions for CI users are shifted 10 dB or more above the normal PI functions.Most CI users thought that MHINT was hard for them.Conclusion:When use new adaptive scoring rules for MHINT,most CI users could be tested with the modified HINT scoring rules,although three subjects could not be tested.Compared with normal hearing subjects,all CI users required positive S/N ratios to perform the HINT measures.更多还原