Resources masquerading as slots: Flexible allocation of visual working memory
Resources masquerading as slots: Flexible allocation of visual working memory
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DOI：
10.1016/j.cogpsych.2016.01.002
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发表时间：
2016-03-01
影响因子：
2.6
通讯作者：
Taylor, Robert
中科院分区：
文献类型：
--
作者：
Donkin, Chris;Kary, Arthur;Taylor, Robert
视觉工作记忆的容量是否更好地表征了基于项目或基于资源的帐户继续激烈辩论。在这里，我们建议视觉工作记忆是一种灵活的资源，有时部署在一个插槽一样的方式。我们开发了一个计算模型，可以对记忆集中的所有项进行编码，也可以仅对这些项的子集进行编码。固定容量的助记符资源在内存中的项之间划分。当较少的项目被编码时，它们每个都以更高的保真度被记住，但代价是当探索一个不在记忆中的项目时，必须依赖于明确的猜测过程。我们使用新的模型来测试预测，参与者将更经常编码的整个项目集时，对内存的需求是可预测的。皇冠版权所有（C）2016由Elsevier Inc. All rights reserved.
Whether the capacity of visual working memory is better characterized by an item-based or a resource-based account continues to be keenly debated. Here, we propose that visual working memory is a flexible resource that is sometimes deployed in a slot-like manner. We develop a computational model that can either encode all items in a memory set, or encode only a subset of those items. A fixed-capacity mnemonic resource is divided among the items in memory. When fewer items are encoded, they are each remembered with higher fidelity, but at the cost of having to rely on an explicit guessing process when probed about an item that is not in memory. We use the new model to test the prediction that participants will more often encode the entire set of items when the demands on memory are predictable. Crown Copyright (C) 2016 Published by Elsevier Inc. All rights reserved.