中文摘要：

目的评价成人语后聋人工耳蜗使用者感知音乐中节奏和音色的能力。方法选取年龄与音乐经验相匹配的听力正常受试者与人工耳蜗使用者各12名，均为男5名，女7名。应用人工耳蜗音乐评估软件（Musical Sounds in Cochlear Implants，MUSIC）中的节奏辨别、乐器识别与乐器数辨别测试评价两组受试者的音乐节奏和音色感知能力。结果12名人工耳蜗受试者平均节奏辨别率为84．4％，与听力正常受试者（85．1％）比较，差异无统计学意义（t=0．116，P〉0．05）；人工耳蜗受试者平均乐器识别率为72．3％、乐器数辨别正确率为39．2％，均低于听力正常受试者平均88．3％和73．5％的正确率，差异具有统计学意义（t值分别为2．498和4．673，P值均〈0．05）。结论成人语后聋人工耳蜗使用者的节奏辨别能力与听力正常人相似，但音色感知能力明显差于听力正常人群。

英文摘要：

Objective To assess the rhythmic and timbral perception ability in musical activities for postlingually deafened adult cochlear implant users. Me~ods Twelve normal-heating and 12 adult cochlear implant users were recruited in this study. Rhythm discrimination, instrument identification, and instrument number detection measurements in Musical Sounds in Cochlear Implants （MUSIC） test battery were used to assess the rhythmic and timbral perception ability for both normal-hearing and cochlear implant users. Results Cochlear implant subjects achieved 84. 4% correct in rhythm discrimination test on average, which was not significantly different from the performance of normal-hearing subjects （85.1% ） （t = 0. 116, P 〉 0.05）. The average score of instrument identification and instrument number detection test for cochlear implant subjects were 72. 3% and 39. 2% , respectively. The performance of cochlear implant subjects in both of two tests were significantly poorer than those of normal-hearing subjects with 88.3% and 73.5% correct, respectively （ t = 2. 498 and 4. 673, P 〈 0. 05 ）. Conclusion Postlingually deafened cochlear implant subjects, on average, performed significantly poorer in timbral perception tasks relative to normal hearing subjects, while close to the ability of normal hearing subiects in rhythmic perception.