复杂图形的双眼视差敏感性

该研究用心理物理学实验方法，以能正确分辨图形在深度上起伏周期数的多少作为判据，检测了七名被试的体视性能。实验结果表明，被试者观看复杂图形的视差敏感性是和图形在深度上变化的复杂程度有关。如果以视差作纵坐标，以图形在深度起伏频率为横坐标，则其深度感知的范围是一个区域，该区域的频率变化范围是从０．１周／度到４周／度，当深度变化频率大于４周／度，则无深度感知。七名被试的双眼深度敏感区有个体差异，但其区域的形状是相似的。

BINOCULAR DISPARITY SENSITIVITY FOR RANDOM DOT STEREOGRAMS WITH DIFFERENT COMPLEXITY OF DEPTH PATTERN

In order to study the effect of different complexities of depth patterns on stereopsis a psychophysical experiment with Random Dot Stereogram (RDS) was conducted. A set of static RDS with different frequencies of sinusoidal variation in disparity, which designated the complexity of pattern, was used to study binocular stereopsis. The result defined a region within certain frequencies of sinusoidal variation of disparity, at which depth could be seen. The range of frequency of sinusoidal variation in disparity was from 0. 1 to 4 (cycle per degree) at the region. The high frequency limitation of depth perception was at 4 cycles per degree. So stereopsis was a function of the complexity of depth pattern. There were some differences of binocular disparity sensitivity in the seven subjects, but the shapes of these seven regions were similar.