Visual attention capacity parameters covary with hemifield alignment
Visual attention capacity parameters covary with hemifield alignment
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DOI：
10.1016/j.neuropsychologia.2013.01.021
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发表时间：
2013-04-01
期刊：
影响因子：
2.6
通讯作者：
Brandt, Stephan A.
中科院分区：
文献类型：
--
作者：
Kraft, Antje;Dyrholm, Mads;Brandt, Stephan A.
视觉注意力理论（TVA; Bundesen，1990）。Psychological Review，97（4），523-547）允许测量不同的视觉注意参数，例如视觉感知的时间阈值、视觉处理能力和视觉短期记忆（VSTM）能力。长期以来，人们一直认为，视觉处理能力和VSTM容量参数几乎是恒定的，从试验到试验。然而，Dyrholm，Kyllingsbaek，Espeseth，and Bundesen（2011）. Journal of Mathematical Psychology，55（6），416-429，发现了VSTM容量的相当大的试验间变异性的证据。在这里，我们表明，一个原因的审判，由审判的变化是，一些参数取决于是否处理相关的信息发生在只有一个hemifields或在两个hemifields。我们的研究结果表明，VSTM和视觉加工能力更高时，刺激分布在整个半野，而不是位于同一个半野。这对应于先前的建议，即跨半野的并行处理比在单个半野内更有效，因为两个半球都参与（例如，Alvarez 8：Cavanagh，2005. Psychological Science，16（8），637-643; Kraft等人，2005.认知脑研究，24（1），453-463）。我们认为，一个固定的视觉注意能力的既定观点必须考虑半场分布相对化。(C)2013爱思唯尔有限公司保留所有权利。
The theory of visual attention (TVA; Bundesen, 1990. Psychological Review, 97(4), 523-547), allows one to measure distinct visual attention parameters, such as the temporal threshold for visual perception, visual processing capacity, and visual short-term memory (VSTM) capacity. It has long been assumed that visual processing capacity and VSTM capacity parameters are nearly constant from trial to trial. However, Dyrholm, Kyllingsbaek, Espeseth, and Bundesen (2011). Journal of Mathematical Psychology, 55(6), 416-429, found evidence of considerable trial-by-trial variability of VSTM capacity. Here we show that one cause of trial-by-trial variation is that some parameters depend on whether processing of relevant information occurs in only one hemifield or in both hemifields. Our results show that VSTM and visual processing capacities are higher when stimuli are distributed across the hemifields rather than located in the same hemifield. This corresponds to previous suggestions that parallel processing is more efficient across hemifields than within a single hemifield because both hemispheres are involved (e.g., Alvarez 8: Cavanagh, 2005. Psychological Science, 16(8), 637-643; Kraft et al., 2005. Cognitive Brain Research, 24(1), 453-463). We argue that the established view of a fixed visual attentional capacity must be relativized by taking hemifield distribution into account. (C) 2013 Elsevier Ltd. All rights reserved.