人体神经系统应激生物电信号对神经阈值研究的作用(英文)

Induced bioelectrical signal in human nervous system and its significance to the research of neuron-threshold

目的:设计一种人体应激生物电信号参数测量电路,以研究人体应激生物电信号的特性。方法:根据人体神经系统应激生物电信号的频率较低并且极其不规则,以及频率和占空比变化非常频繁等特性,构思电路原理,然后进入实际设计、测试和改进,最终将其应用于精密神经阈值刺激仪中。结果:电路经调试和改进,应用Agilent33120A数字函数信号发生器和TDS3034B数字存贮示波器对多种波型、多种频率和占空比的信号进行测量,测量电路对各种信号频率的测量是相当准确的,对占空比的测量误差<0.2%,基于该电路的精密神经阈值刺激仪经临床试用,取得满意的效果。结论:实践证明,该电路具有测量结果准确、实时,电路结构简单等优点。

AIM:To design a type of circuit for measur ing the parameter of induced bioelectrical signal,and apply it i n the research of induced bioelectrical signal ' s character.METHODS:This circuit was designed according to the character of induced bioelectrical signals.It was teste d and improved and then used in the neu-ron-threshold stimulator.RESULTS:The circuit was found to be very accur ate for measuring fre-quency and the error for measuring du ty cycle was below 0.2%.