Niemi P, Välitalo T
Percept Mot Skills. 1980 Oct;51(2):419-22. doi: 10.2466/pms.1980.51.2.419.
Phenomenological and objective methods were used to study the question of whether or not visual stimulus intensity has post-sensory effects on simple RT. It was hypothesized that, in a positive case, the subject would be aware of part of the variation in RT caused by differences in intensity between stimuli. Sanford's (1970) original finding was replicated with auditory stimuli, i.e., the subjects rated RTs to strong stimuli as faster than those to weak ones. With small lights no imbalance of ratings occurred though, again, imbalance was found with larger lights of the same luminance but more retinal illumination. The results suggest that the post-sensory effects of visual intensity on simple RT can be observed if the psychophysical intensity of the stimulation is controlled.
采用现象学和客观方法来研究视觉刺激强度是否对简单反应时具有感觉后效应这一问题。研究假设，若结果为肯定，那么受试者将会意识到由刺激强度差异所导致的反应时变化的一部分。用听觉刺激重复了桑福德（1970年）最初的研究结果，即受试者将对强刺激的反应时评定为比对弱刺激的反应时更快。然而，对于小灯光，未出现评定失衡，但是，对于相同亮度但视网膜照明更强的大灯光，再次发现了失衡现象。结果表明，如果刺激的心理物理强度得到控制，那么视觉强度对简单反应时的感觉后效应是可以观察到的。
