视觉客体在工作记忆中的累积构建  

Coarse-to-Fine Construction of Visual Object Representations in Visual Working Memory

作　　者：卢剑刚[1] 徐昊骙 尹军[1] 高在峰[1] 沈模卫[1] 

机构地区：[1]浙江大学心理与行为科学系,杭州310028

出　　处：《应用心理学》2010年第3期195-200,共6页Chinese Journal of Applied Psychology

基　　金：国家自然科学基金(30870765);教育部哲学社会科学研究重大课题攻关项目(07JZD0029);国家基础科学人才培养基金(J0730753);中央高校基本科研业务费专项资金

摘　　要：本研究采用变化觉察范式,以包含高、低空间频率信息的形状为刺激材料,探讨客体表征在工作记忆中的构建。结果发现,低频形状的工作记忆绩效显著优于高频形状,且二者辨别力的差别随SOA延长逐渐消失,说明低频信息优先进入视觉工作记忆。该结果支持工作记忆中客体表征的构建并非采用"全或无"的方式,而可能采用累积加工方式的假设。We explored how the spatial frequency information conveyed by the object is consolidated into VWM.As the ＂coarse-to-fine＂ hypothesis claimed,the advantage for LSF should also exist in VWM,and a better performance,which would disappear gradually with a longer SOA,was expected in LSF than in HSF.Alternatively,there should be no difference between LSF and HSF in each SF according to the ＂all-or-none＂ hypothesis,and all perceptual information entered into VWM together.Results in the present study revealed that LSF got a processing advantage on d＇ but not on beta over HSF,suggesting that the construction of object representation in VWM is via a ＂coarse-to-fine＂ fashion rather than an ＂all-or-none＂ way.

关 键 词：视觉工作记忆 客体表征 低空间频率 高空间频率 

分 类 号：B842[哲学宗教—基础心理学]