Role of attention and perceptual grouping in visual statistical learning
Role of attention and perceptual grouping in visual statistical learning
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DOI：
10.1111/j.0956-7976.2004.00702.x
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发表时间：
2004-07-01
影响因子：
8.2
通讯作者：
Behrmann, M
中科院分区：
文献类型：
--
作者：
Baker, CI;Olson, CR;Behrmann, M
统计学习被广泛认为是观察者学习分解复杂感觉场景的一种机制。为了确定统计学习的健壮性，我们调查了注意和知觉分组对视觉形状统计学习的影响。研究人员向观察者展示了包含两个形状的刺激，这两个形状要么由条形连接，要么不连接。当观察者被要求注意呈现形状的两个位置时，统计学习的程度不受形状是否相连的影响。然而，当观察者被要求只注意到形状中的一个位置时，只有当形状相连时才能观察到统计学习。这些结果表明，视觉统计学习不仅仅是一个被动的过程。它可以受到注意力和连通性的调节，在自然场景中，这些因素可能会限制刺激统计在学习中的作用。
Statistical learning has been widely proposed as a mechanism by which observers learn to decompose complex sensory scenes. To determine how robust statistical learning is, we investigated the impact of attention and perceptual grouping on statistical learning of visual shapes. Observers were presented with stimuli containing two shapes that were either connected by a bar or unconnected. When observers were required to attend to both locations at which shapes were presented, the degree of statistical learning was unaffected by whether the shapes were connected or not. However, when observers were required to attend to just one of the shapes' locations, statistical learning was observed only when the shapes were connected. These results demonstrate that visual statistical learning is not just a passive process. It can be modulated by both attention and connectedness, and in natural scenes these factors may constrain the role of stimulus statistics in learning.