Object-based encoding in visual working memory: a life span study.
Object-based encoding in visual working memory: a life span study.
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DOI：
10.1167/13.10.11
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发表时间：
2013-08
影响因子：
1.8
通讯作者：
Qiong Zhang;M. Shen;Ning Tang;Guohua Zhao;Zaifeng Gao
中科院分区：
文献类型：
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作者：
Qiong Zhang;M. Shen;Ning Tang;Guohua Zhao;Zaifeng Gao
近年来对视觉工作记忆发展的研究主要集中在视觉工作记忆容量和视觉工作记忆中基于空间的信息过滤。在这里，我们探索了VWM开发的另一个新方面：基于对象的编码（OBE），它是指即使一个特征维度需要被选择到VWM中，其他不相关的维度也会被提取出来。我们探讨了OBE在儿童，年轻人和老年人，通过探测一个“不相关的变化分散注意力的效果”，其中存储的不相关的功能的变化显着影响的变化检测任务中的任务相关功能的性能。参与者被要求记住两个或四个简单的彩色形状，而颜色被用作相关维度。我们发现，在这两种负荷条件下，对不相关形状的改变导致了三个年龄组的显著分心效应;然而，儿童表现出更大程度的出窍经验比年轻人和老年人。这些结果表明，OBE存在于VWM的整个生命周期（6-67岁），但继续发展沿着VWM。
Recent studies on development of visual working memory (VWM) predominantly focus on VWM capacity and spatial-based information filtering in VWM. Here we explored another new aspect of VWM development: object-based encoding (OBE), which refers to the fact that even if one feature dimension is required to be selected into VWM, the other irrelevant dimensions are also extracted. We explored the OBE in children, young adults, and old adults, by probing an "irrelevant-change distracting effect" in which a change of stored irrelevant feature dramatically affects the performance of task-relevant features in a change-detection task. Participants were required to remember two or four simple colored shapes, while color was used as the relevant dimension. We found that changes to irrelevant shapes led to a significant distracting effect across the three age groups in both load conditions; however, children showed a greater degree of OBE than did young and old adults. These results suggest that OBE exists in VWM over the life span (6-67 years), yet continues to develop along with VWM.