Perceptual expertise enhances the resolution but not the number of representations in working memory
Perceptual expertise enhances the resolution but not the number of representations in working memory
复制标题
DOI：
10.3758/pbr.15.1.215
复制
发表时间：
2008-02-01
影响因子：
3.5
通讯作者：
Awh, Edward
中科院分区：
文献类型：
--
作者：
Scolari, Miranda;Vogel, Edward K.;Awh, Edward
尽管视觉工作记忆在认知中起着核心作用，但它的容量仅限于三到四个项目。Curby和Gauthier（2007）研究了感知专业知识是否可以通过更有效地编码视觉信息来帮助克服这一限制。与此一致，他们观察到直立的容量估计高于倒置的脸，这表明知觉专业知识增强了视觉工作记忆。在目前的工作中，我们研究了直立面孔的容量估计是否表明工作记忆中的“插槽”数量增加，或现有插槽内的分辨率提高。我们的研究结果表明，知觉的专业知识提高了分辨率，但不能在工作记忆中持有的表征数量。这些结果澄清了知觉专业知识在工作记忆中的作用，并支持最近的建议，数字和分辨率代表工作记忆能力的不同方面。
Despite its central role in cognition, capacity in visual working memory is restricted to about three or four items. Curby and Gauthier (2007) examined whether perceptual expertise can help to overcome this limit by enabling more efficient coding of visual information. In line with this, they observed higher capacity estimates for upright than for inverted faces, suggesting that perceptual expertise enhances visual working memory. In the present work, we examined whether the improved capacity estimates for upright faces indicates an increased number of "slots" in working memory, or improved resolution within the existing slots. Our results suggest that perceptual expertise enhances the resolution but not the number of representations that can be held in working memory. These results clarify the effects of perceptual expertise in working memory and support recent suggestions that number and resolution represent distinct facets of working memory ability.