Temporal dynamics of encoding, storage, and reallocation of visual working memory.
Temporal dynamics of encoding, storage, and reallocation of visual working memory.
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DOI：
10.1167/11.10.6
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发表时间：
2011-09-12
影响因子：
1.8
通讯作者：
Husain M
中科院分区：
文献类型：
--
作者：
Bays PM;Gorgoraptis N;Wee N;Marshall L;Husain M
以前已经使用回忆的二进制测量结果来编码视觉场景的过程。
召回精度是通过两个独立约束的相互作用来准确描述的：确定可以将信息传递到内存的最大速率，并且一个单独的存储限制决定了最大值的忠诚度，可以随时间逐步递增召回率观察到了存储的项目数量的限制。
如果提示只是一个显着的视觉事件，则用简短的闪光灯提示该项目的召回优势是短暂的，但是如果指示与任务的特定相关性的对象，即使已经对已经有限的记忆资源进行了快速计算，即使是已经将这些提示效应的对象也是如此。
The process of encoding a visual scene into working memory has previously been studied using binary measures of recall. Here we examine the temporal evolution of memory resolution, based on observers’ ability to reproduce the orientations of objects presented in brief, masked displays. Recall precision was accurately described by the interaction of two independent constraints: an encoding limit that determines the maximum rate at which information can be transferred into memory, and a separate storage limit that determines the maximum fidelity with which information can be maintained. Recall variability decreased incrementally with time, consistent with a parallel encoding process in which visual information from multiple objects accumulates simultaneously in working memory. No evidence was observed for a limit on the number of items stored. Cueing one display item with a brief flash led to rapid development of a recall advantage for that item. This advantage was short-lived if the cue was simply a salient visual event, but was maintained if it indicated an object of particular relevance to the task. These cueing effects were observed even for items that had already been encoded into memory, indicating that limited memory resources can be rapidly reallocated to prioritize salient or goal-relevant information.