A common discrete resource for visual working memory and visual search.

A common discrete resource for visual working memory and visual search.
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DOI:
10.1177/0956797612464380
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发表时间:
2013-06
影响因子:
8.2
通讯作者:
Awh E
Awh E
中科院分区:
心理学1区
文献类型:
--
作者:
Anderson DE;Vogel EK;Awh E

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视觉搜索是注意力研究中的主导范式,要求观察者快速识别隐藏在干扰物中的目标。主要的搜索模型假定工作记忆(WM)提供了评估潜在目标的在线工作空间。根据这个假设,具有较高 WM 能力的个体应该更有效地搜索,因为他们应该能够一次理解更多的搜索元素。然而,还没有出现这种相关性的令人信服的证据,而且这个无效结果挑战了越来越多的共识,即限制内部存储的神经过程和限制外部选择的神经过程之间存在很强的重叠。在这里,我们提供了 WM 容量和搜索效率之间强大相关性的多个演示,并且我们记录了观察这种联系的关键边界条件。最后,对视觉选择能力的神经测量(N2pc)的检查表明,视觉搜索和 WM 存储受到共同离散资源的限制。
Visual search, a dominant paradigm within attention research, requires observers to rapidly identify targets hidden among distractors. Major models of search presume that working memory (WM) provides the on-line work space for evaluating potential targets. According to this hypothesis, individuals with higher WM capacity should search more efficiently, because they should be able to apprehend a larger number of search elements at a time. Nevertheless, no compelling evidence of such a correlation has emerged, and this null result challenges a growing consensus that there is strong overlap between the neural processes that limit internal storage and those that limit external selection. Here, we provide multiple demonstrations of robust correlations between WM capacity and search efficiency, and we document a key boundary condition for observing this link. Finally, examination of a neural measure of visual selection capacity (the N2pc) demonstrates that visual search and WM storage are constrained by a common discrete resource.
DOI: 10.1523/jneurosci.1218-12.2012
发表时间: 2012-05-23
期刊: The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子: --
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