刺激持续时间对人体直流记录的c波的影响。一项定量研究。

The influence of stimulus duration on the human d.c. registered c-wave. A quantitative study.

作者信息

Textorius O

出版信息

Acta Ophthalmol (Copenh). 1977 Aug;55(4):561-72. doi: 10.1111/j.1755-3768.1977.tb05652.x.

DOI:10.1111/j.1755-3768.1977.tb05652.x

Abstract

The c-wave of the human ERG was studied at different stimulus durations with a d.c. technique which permitted stable and reproducible recordings. With increasing stimulus lengths the implicit time increased up to a maximum of about 5.5 s. Also the amplitude of the c-wave rose. However, it was influenced by positive and negative off-effects, seen in most volunteers, and at several stimulus lengths superimposed upon the peak of the c-wave. This fact must be considered when developing a standardized method for measuring the c-wave amplitude proper.

摘要

采用直流技术在不同刺激持续时间下对人眼视网膜电图的c波进行了研究，该技术可实现稳定且可重复的记录。随着刺激长度增加，潜伏期增加，最长可达约5.5秒。c波的振幅也会上升。然而，在大多数志愿者中都观察到，c波受正负后效应的影响，在几个刺激长度下，这些后效应叠加在c波峰值上。在制定一种准确测量c波振幅的标准化方法时，必须考虑这一事实。