Shape and spatial working memory capacities are mostly independent.
Shape and spatial working memory capacities are mostly independent.
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DOI：
10.3389/fpsyg.2015.00581
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发表时间：
2015
影响因子：
3.8
通讯作者：
Hasegawa T
中科院分区：
文献类型：
--
作者：
Sanada M;Ikeda K;Hasegawa T
视觉工作记忆（WM）是由一个共同的存储资源还是由多个子系统组成一直是一个有争议的问题。建议它可以分为视觉（颜色，形状，物体等）。和空间WM（用于位置）。然而，最近的一项研究报告了反对这一假设的证据。使用双任务范式，显示形状和空间WM能力之间的干扰，这表明他们有一个共同的资源限制。我们重新研究了这一发现控制可能的混杂因素，包括空间位置线索，任务顺序，和类型的WM负载被操纵的方式。成功再现了相同的结果模式，但仅在高功效实验（N = 90）中，因此估计干扰的大小相当小（d = 0.24）。因此，这些数据提供了一种方法来调和看似矛盾的先前发现。一方面，存储系统的某些部分确实由形状和空间WM系统共享，证实了的报告。另一方面，重叠的量仅是最小的，因此这两个系统应被视为彼此独立，支持经典的视觉空间分离假设。
Whether visual working memory (WM) consists of a common storage resource or of multiple subsystems has been a controversial issue. suggested that it can be divided into visual (for color, shape, objects, etc.) and spatial WM (for location). However, a recent study reported evidence against this hypothesis. Using a dual task paradigm, showed interference between shape and spatial WM capacities, suggesting that they share a common resource limitation. We re-examined this finding controlling possible confounding factors, including the way to present spatial location cues, task order, and type of WM load to be manipulated. The same pattern of results was successfully reproduced, but only in a highly powered experiment (N = 90), and therefore the size of interference was estimated to be quite small (d = 0.24). Thus, these data offer a way to reconcile seemingly contradicting previous findings. On the one hand, some part of the storage system is genuinely shared by shape and spatial WM systems, confirming the report of. On the other hand, the amount of the overlap is only minimal, and therefore the two systems should be regarded as mostly independent from each other, supporting the classical visuo-spatial separation hypothesis.
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影响因子：
5.7
作者：
Postle, BR;Stern, CE;Corkin, S
通讯作者：
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影响因子：
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Courtney, SM;Petit, L;Haxby, JV
通讯作者：
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DOI：
10.1037/0278-7393.26.3.683
发表时间：
2000-05-01
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影响因子：
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作者：
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