正常成人宽频声导抗能量反射的初步研究

Preliminary Results of the Energy Reflectance Measurement Using Wide Band Tympanometry in Chinese Adults with Normal Hearing

黄孟捷;郑芸;王恺;

1:四川大学华西医院耳鼻咽喉-头颈外科听力中心

摘要
目的探讨听力正常成人宽频声导抗(wide band typanometry,WBT)能量反射(energy reflectance,ER)的特点。方法对31例(51耳)听力正常成人的ER值进行测量,计算其均值及标准差,并将ER值测试结果进行形态学上的归类和统计分析。结果在0.258.0 kHz范围内,ER值在低频区较大并接近1,随着频率增加ER值逐渐减小并在2.58.0 kHz范围内,ER值在低频区较大并接近1,随着频率增加ER值逐渐减小并在2.53.0 kHz达最小值,之后随频率继续增加而增加,8.0 kHz后再次反转下降。ER值随频率变化的规律从形态学特点上概括分三类:对称的"W"型、不对称的"W"型和"U"型,三类ER的切迹中心频率(central frequency,CF)均在0.73.0 kHz达最小值,之后随频率继续增加而增加,8.0 kHz后再次反转下降。ER值随频率变化的规律从形态学特点上概括分三类:对称的"W"型、不对称的"W"型和"U"型,三类ER的切迹中心频率(central frequency,CF)均在0.73.9 kHz范围内。结论0.73.9 kHz范围内。结论0.73.9 kHz范围内的声音能量能最有效进入中耳,且此频率范围同言语频率(0.53.9 kHz范围内的声音能量能最有效进入中耳,且此频率范围同言语频率(0.54.0 kHz)非常相近,对言语感知十分重要。
关键词
正常听力;成人;宽频声导抗测试;能量反射;中心频率
基金项目(Foundation):
国家“十一五”科技支撑计划资助(2007BAI18B12)
作者
黄孟捷;郑芸;王恺;
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