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首页> 外文期刊>Neuropsychologia >Understanding the allocation of attention when faced with varying perceptual load in partial report: a computational approach.
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Understanding the allocation of attention when faced with varying perceptual load in partial report: a computational approach.

机译:在部分报告中面对变化的感知负荷时,了解注意力分配:一种计算方法。

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摘要

The allocation of visual processing capacity is a key topic in studies and theories of visual attention. The load theory of Lavie (1995) proposes that allocation happens in two steps where processing resources are first allocated to task-relevant stimuli and secondly remaining capacity 'spills over' to task-irrelevant distractors. In contrast, the Theory of Visual Attention (TVA) proposed by Bundesen (1990) assumes that allocation happens in a single step where processing capacity is allocated to all stimuli, both task-relevant and task-irrelevant, in proportion to their relative attentional weight. Here we present data from two partial report experiments where we varied the number and discriminability of the task-irrelevant stimuli (Experiment 1) and perceptual load (Experiment 2). The TVA fitted the data of the two experiments well thus favoring the simple explanation with a single step of capacity allocation. We also show that the effects of varying perceptual load can only be explained by a combined effect of allocation of processing capacity as well as limits in visual working memory. Finally, we link the results to processing capacity understood at the neural level based on the neural theory of visual attention by Bundesen et al. (2005).
机译:视觉处理能力的分配是视觉注意的研究和理论中的关键主题。 Lavie(1995)的负荷理论提出分配发生在两个步骤中,首先将处理资源分配给与任务相关的刺激,然后将剩余容量“溢出”给与任务无关的干扰因素。相比之下,Bundesen(1990)提出的视觉注意力理论(TVA)假设分配发生在一个步骤中,其中处理能力按其相对注意权重的比例分配给所有与任务相关和与任务无关的刺激。在这里,我们提供了来自两个部分报告实验的数据,在这些实验中,我们改变了与任务无关的刺激(实验1)和感知负荷(实验2)的数量和可辨别性。 TVA很好地拟合了两个实验的数据,因此有利于简单的解释,只需一步分配容量即可。我们还表明,只能通过处理能力分配以及视觉工作记忆中的限制的综合影响来解释感知负载变化的影响。最后,我们将结果与Bundesen等人基于视觉注意的神经理论在神经级别理解的处理能力联系起来。 (2005)。

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