视觉工作记忆中基于客体的存储机制:来自ERPs的证据  

The Object-Based Storage in Visual Working Memory:Evidence from ERPs

作　　者：徐青[1] 尹军[1] 高在峰[1] 叶绿绿[1] 王慈[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》2009年第2期106-111,共6页Chinese Journal of Applied Psychology

基　　金：教育部高等学校博士学科点专项科研基金(20060335034);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(J0630760)的资助

摘　　要：该研究以简单形状和颜色构成的客体为材料,采用延迟匹配范式,通过记录事件相关电位,以反映工作记忆表征与知觉输入间冲突的N270为指标,就视觉工作记忆中的客体存储机制进行了探讨。结果发现,无关维度特征变化与目标维度特征变化均可诱发N270。该结果表明,视觉工作记忆对客体目标特征进行存储时,无关特征亦自动得到选择加工,支持基于客体的存储说。At present, there are two theories on how visual information is represented in visual working memory （VWM）. One proposes the object-based storage hypothesis, suggesting that the VWM can automatically store all the features of an object. The other one puts forward a selective-storage hypothesis, indicating that only relevant feature can be represented in VWM. In this paper, using delayed matching-to-sample paradigrn, we adopted an ERPs experiment to investigate the issue by was defined taking by color N270 as an index. The object and shape, which could be processed in parallel. The data N270 was elicited when the changed, and could be also analyses showed that relevant feature was observed in irrelevant change condition. Therefore, the result suggested when relevant feature was selected, the irrelevant features from the same object would also be automatically selected, thus supporting the object-based storage hypothesis.

关 键 词：视觉工作记忆 基于客体的存储 选择性存储 N270 简单特征 

分 类 号：B842[哲学宗教—基础心理学]