摘要
本研究采用数字滤波分析（ＤＦＡ）和快速傅里叶变换（ＦＦＴ），观测了１５例（２０耳）听力正常人ＡＢＲ时域和频域参量的相关性：①当高频不断滤除时，Ⅳ、Ⅱ、Ⅲ波先后消失，至４００Ｈｚ时以Ⅰ、Ⅴ波为主；②ＡＢＲ频谱有三个主峰，中心频率分别为２２７±２４Ｈｚ（Ｆ１），５７５±２３Ｈｚ（Ｆ２）和１０１４±５４Ｈｚ（Ｆ３），对应的周期为４．６７±０．７４ｍｓ，１．７０±０．０６ｍｓ和０．９７±０．０５ｍｓ；③ＡＢＲ的Ⅰ－Ⅴ波间期为４．００±０．１０ｍｓ，Ⅰ－Ⅲ、Ⅲ－Ⅴ波间期均值为２．００±０．０５ｍｓ，Ⅰ－Ⅱ、Ⅱ－Ⅲ、Ⅲ－Ⅳ和Ⅳ－Ⅴ波间期均值为１．００±０．０３ｍｓ，对应的频率依次为２５０±７Ｈｚ，５００±１３Ｈｚ和１００１±２６Ｈｚ。
Abstract
The parameters of frequency domain and time domain on auditory brainstem response (ABR) in
15 normal hearing subjects were measured with digital filtering analysis (DFA) and fast fourier
transform (FFT).Results showed that :① When high frequencies were filtered wave Ⅳ,Ⅱ and
Ⅲ disappeared,wave Ⅰ and Ⅴ remained until 400Hz;② There were three major peaks in ABR
frequency spectrum,the centre frequencies were 227±24Hz(F 1),575±23Hz(F 2) and 1014±
54Hz(F 3),their corresponding terms were 4 67±0 74ms(F 1),1 70±0 06ms(F 2) and 0 97
±0 05ms(F 3) respectively;③ The value of interpeak of Ⅰ Ⅴ was 4 00±0 10ms,the mean
value of interpeak of Ⅰ Ⅲ and Ⅲ Ⅴ was 2 00±0 05ms,the mean value of interpeak of Ⅰ
Ⅱ,Ⅱ Ⅲ,Ⅲ Ⅳ and Ⅳ Ⅴ was 1 00±0 03ms,their corresponding frequencies was 250±
7Hz,500±13Hz and 1001±26Hz respectively.
出处
《耳鼻咽喉（头颈外科）》
1999年第1期11-14,共4页
Chinese Arch Otolaryngology-Head Neck Surg
