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在生理学和药理学实验中常要用电脉冲刺激实验动物的某些神经部位,观察相应部位神经冲动发放脉冲数,算出某段时间里发放值的平均值,画出变化曲线,以确定这些部位的生理活动机理。通常是用硬件电路组成刺激方波发生器并用示波器观察或用频率仪记录神经发放的脉冲数。设备比较复杂。对刺激方波频率、波宽的调整,对神经发放
In physiology and pharmacology experiments often use electrical pulses to stimulate certain nerve parts of experimental animals to observe the corresponding parts of the pulse of the number of impulses issued to calculate the value of a period of time the average value, draw the curve to determine these parts of Physiological mechanism. Usually the hardware circuit to stimulate the square wave generator and oscilloscope to observe or use the frequency meter to record the number of nerve-issued pulses. Equipment is more complicated. On the stimulation of square wave frequency, wave width adjustment, the release of nerves