Reaction time to square-wave gratings as a function of spatial frequency, complexity and contrast
Reaction time to square-wave gratings as a function of spatial frequency, complexity and contrast
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方波光栅的反应时间与空间频率、复杂度和对比度的函数关系
DOI：
10.1016/0006-8993(75)90245-0
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发表时间：
1975
期刊：
影响因子：
2.9
通讯作者：
A. Benton
中科院分区：
文献类型：
--
作者：
A. Tartaglione;D. P. Goff;A. Benton
本文测量了正常人对简单呈现的方波条形图形的视觉反应时。该模式相对于空间频率的幅度和数量（视角的一个周期/度，3个周期/度，以及两者的组合）而变化，其中每个空间频率刺激以3个对比度水平呈现。空间平均亮度保持恒定。RT随着空间频率的增加而增加，并且在每个对比度水平的组合刺激的值是中间的。RT随着每个空间频率刺激的对比度水平的降低而增加。两个参数之间没有相互作用。研究结果表明，行为反应测量可以用来研究人类视觉的多通道假说。结果进行了比较，与其他调查人员采用正弦波光栅，知觉反应措施和诱发电位技术。
Visuomotor reaction time (RT) of normal human subjects to briefly presented square-wave bar patterns were measured. The pattern varied with respect to magnitude and number of spatial frequencies (one cycle/degree of visual angle, 3 cycles/degree, and both combined) with each spatial frequency stimulus presented at 3 levels of contrast. Space-average luminance was held constant. RT increased with the higher spatial frequency and was intermediate in value for the combination stimulus at each level of contrast. RT increased with decreasing contrast levels for each spatial frequency stimulus. There was no interaction between the two parameters. The findings indicate that a behavioral response measure can be employed to study the multiple channel hypothesis of human vision. The results were compared with those of other investigators employing sine-wave gratings, perceptual response measures and the evoked potentials technique.