特征数量对三维图形视觉工作记忆容量的影响

The Effect of the Number of Features on Visual Working Memory Capacity of 3-D Graphs

研究采用单检测变化觉察范式,考察了特征数量对三维图形的客体工作记忆容量的影响.实验结果显示:⑴三维图形的特征数量显著影响了被试的记忆成绩.即特征数量越多,被试的检测正确率越低.⑵被试对四个单颜色三维图形与两个双颜色三维图形(特征数量相同但客体数量不同)的记忆成绩无显著差异.⑶当识记项目数相同时,被试对双颜色三维图形的记忆容量要显著小于单颜色三维图形的记忆容量.这些结果表明:特征数量影响三维图形的客体工作记忆容量.在客体数目保持恒定时,客体所含特征数量越多,被试的记忆负担越大,其客体工作记忆容量越小.

The influence of characteristics'number of the 3-D graphs on object working memory capacity is investigated in this study by using single change detection paradigm.Experimental results showed that:(1)The number of features has significant influence on the participants*memory performance.That is,the more features,the lower correct rate of the test.(2)The results showed that there were no significant differences between the four single color 3-D graphs and two double-color 3-D graphs(the same number of features but different number of objects).(3)When the number of memory items at the same time,the objects memory capacity and memory capacity on double color 3-D graphs is significantly smaller than the single color 3-D graphs.These results show that the number of features affects the 3-D graphs object working memory capacity.When the number of objects remains constant,the more features contained in the object,the greater the memory burden of the participants,the smaller the object working memory capacity.