Brown D R, Randall D C
Center for Biomedical Engineering, University of Kentucky, Lexington 40506-0070.
Am J Physiol. 1989 Oct;257(4 Pt 2):R958-63. doi: 10.1152/ajpregu.1989.257.4.R958.
Two systems based on microcomputers with analog-to-digital (A/D) converters were developed to measure sympathetic nerve activity. The first utilized a relatively inexpensive computer and A/D converter and an analog technique to count nerve traffic "spikes" above a reference voltage. The second system, which required a more expensive microcomputer and A/D converter, used digital methods exclusively to count spikes and integrate nerve activity. These systems produced accurate and reliable indexes of nerve traffic. The digital system could also be used to store the nerve signal to magnetic disk, thereby allowing the later use of more complex analytical procedures and the possibility of comparing the results of different analyses performed upon a single data set.
开发了两种基于带有模数（A/D）转换器的微型计算机的系统来测量交感神经活动。第一种系统使用相对便宜的计算机、A/D 转换器以及一种模拟技术来对高于参考电压的神经冲动“尖峰”进行计数。第二种系统需要更昂贵的微型计算机和 A/D 转换器，它完全使用数字方法来对尖峰进行计数并整合神经活动。这些系统产生了准确且可靠的神经冲动指标。数字系统还可用于将神经信号存储到磁盘上，从而允许日后使用更复杂的分析程序，并有可能比较对单个数据集进行的不同分析结果。
