The effects of visual discomfort and pattern structure on visual search
The effects of visual discomfort and pattern structure on visual search
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DOI：
10.1068/p270021
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发表时间：
1998-01-01
期刊：
影响因子：
1.7
通讯作者：
Hayes-Williams, K
中科院分区：
文献类型：
--
作者：
Conlon, E;Lovegrove, W;Hayes-Williams, K
当看到条纹重复图案时，如方波或一页文本，会引起不愉快的身体和感知副作用。在视觉不适程度上得分越高的参与者，这种敏感度越高。在三个实验中，研究了这种灵敏度对类似阅读的视觉搜索任务的性能效率的影响。在实验1和2中，图案的“整体”结构被操纵成方波图案、棋盘图案和格纹图案。结果发现，遭受严重视觉不适的一组比其他组花了更长的时间来完成任务，对方波样图案的呈现干扰最大。这支持了对局部目标元素的最大视觉注意力分散的预测，因为呈现的图案结构会引起最大的视觉不适。在实验3中，对内部模式成分进行了操作，降低了任务难度。采用无干涉和两种干涉模式，一种仅具有全局特征，另一种由分散的线元组成，包含全局和局部分量。全局模式结构对视觉搜索任务产生干扰效应。所有小组在无干扰模式下的任务中表现出相同的速度和准确性，这一发现归因于任务难度的降低。McConkie和Zola的视觉注意模型被用来解释这些结果。
Unpleasant somatic and perceptual side effects can be induced when viewing striped repetitive patterns, such as a square wave or a page of text. This sensitivity is greater in participants with higher scores on a scale of visual discomfort. In three experiments the effect that this sensitivity has on performance efficiency in a reading-like visual search task was investigated. In experiments 1 and 2, the 'global' structure of the patterns was manipulated to produce a square-wave, a checkerboard, and a plaid pattern. It was found that the group that suffered severe visual discomfort took significantly longer than other groups to perform the task, with interference greatest with presentation of the square-wave-like pattern. This supports the prediction of greatest distraction of visual attention from the local target elements with presentation of the pattern structure inducing greatest visual discomfort. In experiment 3, the internal pattern components were manipulated and task difficulty reduced. A no-interference and two interference patterns, one with a global characteristic only and the second made up of distracting line elements, containing global and local components were used. The global pattern structure produced interference effects on the visual-search task. All groups performed with the same speed and accuracy on the task involving the no-interference pattern, a finding attributed to reduced task difficulty. McConkie and Zola's model of visual attention was used to explain these results.