方位维度视觉搜索的影响因素

Factors influencing Visual Search on Orientation Dimension

Duncan 等人认为，当目标和干扰子之间差异越大且干扰子彼此之间差异越小时，则目标搜索越快。他们的结论定性地描述了目标搜索斜率（反应时间对呈现项目数的函数）的决定因素。笔者从方位维度刺激关系方面进一步定量探究该问题，并提出决定因素为g(T， D， n)（目标方位和干扰子方位间的函数关系）。实验结果证实目标搜索斜率是由g(T，D，n)值决定，目标搜索斜率随g(T， D， n)值增大而减小，相同g(T， D， n)值条件的目标搜索斜率无显著差异。

Objective Treisman and Gelade put forward A Feature-Integration Theory of Attention in 1980. The theory included concepts such as visual search and illusory conjunction， among others. Visual search contained feature and conjunction searches. They suggested that search for the target defined by single features should be in parallel processing without attention limits in feature search. In conjunction search， they assumed that search for the target defined by more than one features’ conjunction sh