顶叶在特征捆绑中的作用--对一例典型双侧顶叶损伤病人的研究

本实验以一例典型双侧顶叶损伤患者为研究对象，以数字和几何形状为材料，采用形状和颜色特征识别任务，主要考察了顶叶及空间信息是否影响视觉特征捆绑。结果显示，患者在特征捆绑任务上操作成绩较差，错觉性结合错误远远多于特征错误，且正确反应及错觉性结合受刺激间的距离及呈现方式的影响，表现出距离和位置效应。这些结果表明，顶叶在视觉特征捆绑中起重要作用，这种影响作用很可能与空间注意有关。本研究进一步为特征整合理论提供了神经心理学的证据。

The Role of the Parietal Cortex in Visual Feature Binding--A Case Study of a Patient with Bilateral Parietal Cortex Lesion

A patient with damaged bilateral parietal cortex was the subject in this study. With the help of numbers and geometric figures as well as shape and color dentification tasks the effects of parietal cortex and spatial information on visual feature binding were exaimined. The data showed that the patient performed binding tasks poorly, in which the number of illusory conjunctions was greater than that of feature misidentification. Furthermore, the distance between target and distractor along with simultaneous or sequential display affected correct responses and illusory conjunctions. These results indicated that the parietal lobe played an important role in visual feature binding, which possibly related to spatial information. The results provided neuropsychological evidence for the theory of feature integration.