中国科学院心理研究所机构知识库

以 1 1例内侧颞叶 (MTL)损伤病人为被试 ,探讨MTL与知觉启动的关系及其内在机制。被试依次完成学习颜色词、快速词命名和再认任务。在实验 1的词命名中包括旧词、重组颜色词和新词 ,结果表明 ,MTL损伤病人没有表现出旧词的命名时间短于重组颜色词的现象 ,颜色启动效应受损 ,其再认成绩也低于正常被试。但是当用新颜色词代替重组颜色词后 (实验 2 ) ,MTL损伤病人读旧词的时间明显短于新颜色词 ,颜色启动与正常对照组之间没有明显差别 ,但他们的再认成绩仍比对照组低。这表明 ,当任务要求被试加工项目与其特性之间的关系时 (词与颜色 ) ,MTL损伤对启动效应会有影响 ,提示MTL在一些形式的知觉启动中起重要作用

This study explored the role and its mechanisms of the medial temporal lobe (MTL) in color priming effects. Eleven MTL lesioned patients and 18 age , gender and education2matched normal subjects were tested. In the study session , a series of colored words were presented and the subjects were asked to integrate the color and the word together. In the test session , the subjects read the words presented in the original state (old stimuli) , or a different old color ( recombined stimuli) and new words (new stimuli) as quickly as possible in Experiment 1 , whereas they read the words presented in the original old or new color ,
and new words in Experiment 2. If the patients named the old stimuli more quickly than the recombined ones (or words presented in a new color) , they were considered to show color priming effects. The results showed that the MTL lesioned patients failed to name the old stimuli more quickly than the recombined ones. The recognition performance of the patients was lower than that of the control subjects. However , as shown in Experiment 2 , when the words presented in the different old color were replaced with the words present in a new color , the patients could name as quickly and accurately as the normal subjects. The results highlighted the important role of MTL in perceptual priming effects , in the situation when forming associations between the items and its features is needed.