[Analysis for the auditory brainstem responses of guinea pigs with wavelet transform].
OBJECTIVE
To fine out the advantages of wavelet transform when it is applied in analysis of auditory brainstem responses.


METHODS
Thirty of male, albino guinea pigs weighing 300 to 400 g were divided into three groups: 1. normal hearing; 2. conductive hearing loss; 3. sensorineural hearing loss. ABR of the animals was collected and represented with wavelet transform respectively. The signals before and after being transferred was contrasted and dealt with statistics.


RESULTS
The ABR signals are distorted in wavelet transform scale 2 and background noises are increased in scale 4. The conventional time feature of ABR signals can be conserved and the present of I wave can be increased in wavelet transform scale 3.


CONCLUSIONS
Wavelet transform scale 3 is proper to analyze the ABR signals of guinea pig. Compared with conventional method, it can conserve the ABR signal's time feature and increase the emerged rate of I wave.
Wei
L
L
Eye Ear Nose Throat Hospital, Shanghai Medical University, Shanghai 200031.
Tan
M
M
Wang
Z
Z
D000818:Animals; D016057:Evoked Potentials, Auditory, Brain Stem; D006168:Guinea Pigs; D006314:Hearing Loss, Conductive / Q000503:physiopathology*; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology*; D008297:Male; D012815:Signal Processing, Computer-Assisted