ISSN 1671-3710
CN 11-4766/R
主办：中国科学院心理研究所
出版：科学出版社

心理科学进展 ›› 2011, Vol. 19 ›› Issue (6): 794-802.

• 博士论坛 • 上一篇    下一篇

任务维度和任务无关维度干扰信息的同质性影响视觉搜索的神经机制

魏萍;周晓林   

  1. (1首都师范大学心理系, 北京市“学习与认知”重点实验室, 北京 100048) (2北京大学心理学系, 北京100871)
  • 收稿日期:2011-05-02 修回日期:1900-01-01 出版日期:2011-06-15 发布日期:2011-06-15
  • 通讯作者: 魏萍

The Brain Mechanisms for Processing Heterogeneous Distracting Information Along Task-Relevant and -Irrelevant Dimensions in Visual Search

WEI Ping;ZHOU Xiao-Lin

  

  1. (1 Beijing Key Laboratory of Learning and Cognition and Department of Psychology, Capital Normal University, Beijing 100048, China)
    (2 Center for Brain and Cognition Sciences and Department of Psychology, Peking University, Beijing 100871, China)

  • Received:2011-05-02 Revised:1900-01-01 Online:2011-06-15 Published:2011-06-15
  • Contact: WEI Ping

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被引次数

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摘要： 在三个实验中, 我们利用功能性磁共振成像(functional magnetic resonance imaging, fMRI)技术考察了在简单特征搜索任务和客体内联合搜索任务中任务维度干扰项的同质性(或称一致性, homogeneity)和任务无关维度干扰信息的同质性对视觉搜索行为的影响及其神经机制。主要探讨了三个问题：(1) 任务维度干扰信息的同质性与目标存在性之间交互作用的神经机制; (2) 任务维度干扰信息的同质性与任务无关维度干扰信息的同质性之间的交互作用及其神经机制; (3) 上述神经机制在不同类型的视觉搜索(特征搜索和联合搜索)中的异同。

关键词: 特征搜索, 联合搜索, 选择性注意, 任务维度, 任务无关维度, 功能磁共振成像

Abstract: Three functional magnetic resonance imaging (fMRI) experiments were conducted to investigate three issues regarding the impacts of heterogeneity along the task-relevant and the task-irrelevant dimensions upon the efficiency in visual search. The first concerns the neural basis of the interaction between target-presence and the homogeneity along the task-relevant dimension. The second is about the behavioral consequences and the neural correlates of processing heterogeneous distracting information along task-relevant and –irrelevant dimensions. The third is about the common and specific brain mechanisms underlying the interactions between target-presence and the homogeneity along task-relevant and -irrelevant dimensions in feature search vs. conjunction search.

Key words: visual search, feature search, conjunction search, selective attention, task-relevant dimension, task-irrelevant dimension, fMRI