人体电流感觉阈值客观测试系统的研制  

Objective Measurement System for Human Current Perception Threshold

作　　者：乐艳飞[1] 刘军[1] 郑俊褒[1] 楼正国[1] 李光[1] 

机构地区：[1]浙江大学生物医学工程系生物医学工程教育部重点实验室,杭州310027

出　　处：《仪器仪表学报》2005年第z1期270-271,274,共3页Chinese Journal of Scientific Instrument

基　　金：973重大基础研究前期研究专项(200CCA01800);国家自然科学基金(30470470)资助项目

摘　　要：介绍了一种新型的人体电流感觉阈值测试系统。当向被试施加特定频率、幅度的电流刺激时,被试的皮肤电流响应信号由一个放大仪客观地记录下来。被试的电流感觉阈值定义为被试无皮肤电流响应时所接受的最大刺激强度和有响应时所接受的最小刺激强度的平均值。相对现有的定量感觉测试方法,作者介绍的方法在理论上更加客观地评价被试的感觉程度。测试结果表明用新系统测试人体电流感觉阈值可重复性好,相对传统的测试系统更易操作。It is reported for a novel instrument for human sensory threshold measurement. When electrical current stimuli of predetermined frequency and amplitudes are applied on a subject, an amplifier is employed to monitor the subject's galvanic skin response (GSR). The current perception threshold of the subject is determined by averaging the minimal and maximal current values which do and do not cause apparent GSR changes respectively. Theoretically the described method is more objective in comparison to existing quantitative sensory testing methods. Experimental results show that the tests using this new system have a good repeatability and are easier to operate than those in conventional systems.

关 键 词：皮肤电流响应 感觉 阈值 客观 测试 

分 类 号：TH7-55[机械工程—仪器科学与技术]