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Alternative TitleDynamic Relationship between Average Representation and Individual Representations
Thesis Advisor陈文锋
Degree Grantor中国科学院研究生院
Place of Conferral北京
Degree Discipline基础心理学
Keyword平均表征 个体表征 竞争 共存 注意抑制


Other Abstract

    People can accurately extract average representation from multiple objects.However, there is a hot debate on the relationship between average representation and individual representations during ensemble coding. It has been found that individuals can accurately extract average representation at the expense of the accuracy of individual representations. But recently, there is growing evidence that observers can extract both average representation and individual representations accurately. The debate involves two theoretical arguments about the processing mechanism of average representation: the global parallel processing based on distributed attention, and the individual sampling processing based on focused attention. From a hierarchical perspective, based on the hierarchy and reverse hierarchy theory of visual perceptual learning, this study investigate the relationship between average representation and individual representations, and preliminary integrate the two theories of average representation, which contribute to understand the processing mechanism of average representation.
    In study 1,we used mere exposure paradigm variants to examine the relationship between average representation and individual representations with multiple indicators, such as behavioral performance, temporal progression (ERP techniques), and eye movement patterns (eye-tracking technique). Results showed that, average emotion representation coexisted with individual representations during the early stage of ensemble coding.
    In study 2, we adopted preview search paradigm to examine the effects of attention suppression on average representation and individual representations.Results showed that, both average emotion representation and individual representations could be processed, but to a different degree, and compared to average emotion representation, individual representations was more unstable.

Document Type学位论文
Recommended Citation
GB/T 7714
李慧云. 平均表征与个体表征的动态关系[D]. 北京. 中国科学院研究生院,2018.
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