Visual working memory for simple and complex visual stimuli
Visual working memory for simple and complex visual stimuli
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DOI：
10.3758/bf03206454
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发表时间：
2005-12-01
影响因子：
3.5
通讯作者：
Jiang, YH
中科院分区：
文献类型：
--
作者：
Eng, HY;Chen, DY;Jiang, YH
神奇的数字4是否表征了我们对各种物体的视觉工作记忆(VWM)能力，或者VWM的能力与这些物体的知觉复杂性成反比？为了找出知觉复杂性如何影响VWM，我们使用了一项变化检测任务来测量VWM对六种不同复杂程度的刺激的能力：颜色、字母、多边形、曲折、立方体和面孔。我们发现，对于更复杂的刺激，估计的容量减少，这表明知觉复杂性是决定VWM容量的一个重要因素。然而，如果允许受试者观看更长时间的样本记忆显示，知觉复杂性和VWM容量之间的相当大的相关性显著下降。我们的结论是，当编码限制最小化时，知觉复杂性影响但不决定VWM容量。
Does the magical number four characterize our visual working memory (VWM) capacity for all kinds of objects, or is the capacity of VWM inversely related to the perceptual complexity of those objects? To find out how perceptual complexity affects VWM, we used a change detection task to measure VWM capacity for six types of stimuli of different complexity: colors, letters, polygons, squiggles, cubes, and faces. We found that the estimated capacity decreased for more complex stimuli, suggesting that perceptual complexity was an important factor in determining VWM capacity. However, the considerable correlation between perceptual complexity and VWM capacity declined significantly if subjects were allowed to view the sample memory display longer. We conclude that when encoding limitations are minimized, perceptual complexity affects, but does not determine, VWM capacity.