Dynamic shifts of limited working memory resources in human vision.

Dynamic shifts of limited working memory resources in human vision.
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DOI:
10.1126/science.1158023
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发表时间:
2008-08-08
期刊:
影响因子:
56.9
通讯作者:
Husain, Masud
Husain, Masud
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Bays, Paul M.;Husain, Masud

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我们记住我们所看到的东西的能力是非常有限的。目前大多数的观点都将这个限制描述为一个固定数量的项目--只有4个对象--可以保存在视觉工作记忆中。在这里,我们表明,视觉记忆容量是不固定的对象的数量,而是一个有限的资源,在视觉场景中的所有项目之间的动态共享。这种资源可以在对象之间灵活地转移,分配偏向于选择性注意和即将到来的眼球运动的目标。分配给每个项目的资源的比例决定了它被记住的精度,我们显示的关系是由一个简单的幂律,允许在一个场景中的资源分布的定量估计。
Our ability to remember what we have seen is remarkably limited. Most current views characterize this limit as a fixed number of items – only 4 objects – that can be held in visual working memory. Here we show that visual memory capacity is not fixed by number of objects, but rather is a limited resource that is shared out dynamically between all items in the visual scene. This resource can be shifted flexibly between objects, with allocation biased by selective attention and towards targets of upcoming eye movements. The proportion of resources allocated to each item determines the precision with which it is remembered, a relationship that we show is governed by a simple power law, allowing quantitative estimates of resource distribution in a scene.
DOI: 10.3758/bf03198630
发表时间: 1973-01-01
期刊: PERCEPTION & PSYCHOPHYSICS
影响因子: --
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