Achieving precise display timing in visual neuroscience experiments
Achieving precise display timing in visual neuroscience experiments
复制标题
DOI：
10.1016/j.jneumeth.2010.06.018
复制
发表时间：
2010-08-30
影响因子：
3
通讯作者：
Elze, Tobias
中科院分区：
文献类型：
--
作者：
Elze, Tobias
在实验视觉神经科学中，经常需要对视觉刺激进行简短的介绍。视觉刺激的持续时间和它们的信号形状的准确知识在人类的心理物理实验和动物的神经元记录中是重要的。在这项研究中，我们测量和分析在标准的计算机显示器上的视觉刺激的亮度变化。两个最常用的监视器技术，阴极射线管（CRT）和液晶显示器（LCD）显示器的信号特性进行了比较，并分析了信号形状对视觉刺激的持续时间的影响。CRT和LCD信号之间的根本差异需要不同的方法来指定持续时间，特别是对于简短的刺激呈现。此外，LCD监视器上的刺激持续时间在不同的监视器型号上变化，并且甚至在单个监视器上的不同亮度水平上不均匀。使用LCD技术进行简短的刺激呈现需要在实验之前进行大量的显示测量。(C)2010 Elsevier B.V.保留所有权利。
In experimental visual neuroscience brief presentations of visual stimuli are often required. Accurate knowledge of the durations of visual stimuli and their signal shapes is important in psychophysical experiments with humans and in neuronal recordings with animals. In this study we measure and analyze the changes in luminance of visual stimuli on standard computer monitors. Signal properties of the two most frequently used monitor technologies, cathode ray tube (CRT) and liquid crystal display (LCD) monitors, are compared, and the effects of the signal shapes on the stated durations of visual stimuli are analyzed. The fundamental differences between CRT and LCD signals require different methods for the specification of durations, especially for brief stimulus presentations. In addition, stimulus durations on LCD monitors vary over different monitor models and are not even homogeneous with respect to different luminance levels on a single monitor. The use of LCD technology for brief stimulus presentation requires extensive display measurements prior to the experiment. (C) 2010 Elsevier B.V. All rights reserved.