[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.

METHOD: 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.

RESULT: 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.

CONCLUSION

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.