豚鼠听觉诱发电位中潜伏期反应的有关研究

A Study on the Auditory Evoked Middle Latency Response in Guinea Pigs

观察了不同的滤波带通及不同的引导部位豚鼠听觉诱发电位中潜伏期反应（ＭＬＲ）的变化。结果表明：用４种不同的滤波带通测试，各波潜伏期和波幅有较大差异；颞区、顶区、枕区、额区的ＭＬＲ波形有显著差别，可能由于颞区ＭＬＲ是由针电极直接引导接近听区皮层的电位所致。提示：测试条件对ＭＬＲ的记录有较大影响，各波有不同的来源。

The changes of Middle Latency Response(MLR) to auditary stimuli through different band pass filters and different piolt areas in guinea pigs were studied. The results were:the latent period with narrow band pass filter was different from that with wide band pass fitter.The difference among MLR at temporal lobe,occipital lobe, parietal lobe, and frontal lobe was marked. These data indicate that the origins of the waves are different and the surveying conditions may influence the recording of MLR.