脑干听觉诱发电位的能量集中在一段比较狭窄的频率范围内,因此应用带通滤波可以改善信噪比。许多人都是用摸拟滤波器来做的,他们所用的频带宽度也不尽不相同,但这样做的结果对幅度和潜伏期的测量都有一些影响。作者研究了低通和高通模拟滤波对此影响的程度并和零相移数字滤波的结果做了比较。作者在迭加仪的四道输入中,有一道不加滤波, Brainstem auditory evoked potential energy concentrated in a relatively narrow range of frequencies, the application of band-pass filtering can improve the signal to noise ratio. Many people use analog filters, and they use different bandwidths, but the results of this exercise have some effect on amplitude and latency measurements. The authors studied the extent to which low- and high-pass analog filtering affects this and compares it with the results of zero-phase-shift digital filtering. The author in the superposition of the four input, there is a filter,