PSYCH OpenIR  > 健康与遗传心理学研究室
Alternative TitleColor perception and retrieval: An event-related functional magnetic resonance imaging study
Thesis Advisor翁旭初 ; 马林
Degree Grantor中国科学院研究生院
Place of Conferral北京
Degree Discipline医学心理学
Keyword陈述性记忆 巩固 贮存 内侧颞叶


Other Abstract

    According to the classical theory of storage of declarative memory, memory trace is stored in the same network that mediates information processing and encoding. However, this theory has been challenged in recent years.  For example, several neuroimaging studies show that retrieval of color information does not always activates brain areas  engaged during color perception.   We argued that this phenomenon could be explained by the view of differential storage of pictorial and  semantic information.  The present study was designed to test our argument.
Methods: Event-related fMRI was used to investigate the activation of cerebral cortex during color perception and color retrieval in 6 normal right-handed volunteers. In the retrieval task, the subjects were asked to recall the color of learned materials, following repeatedly learning the arbitrary associations of color and moving direction.
    Results:  V4 in the posterior fusiform gyrus was significantly activated during color perception, whereas recall of color information activated left fusiform gyrus, which was organized into two distinct areas, one was more anterior than the other. The posterior one was at the same location of V4.  Peak activation in this area was about two seconds later than that in the anterior area.
    Conclusion:  While the pictorial aspect of color information is stored in left V4,the semantic aspect is stored in an area anterior to the V4.  These results suggest that pictorial and semantic information in declarative memory is closely related but separately stored in different brain areas.

Document Type学位论文
Recommended Citation
GB/T 7714
赵晶辉. 颜色知觉和颜色提取的事件相关功能磁共振成像研究[D]. 北京. 中国科学院研究生院,2002.
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