Measuring visual discomfort
Measuring visual discomfort
复制标题
DOI：
10.1080/135062899394885
复制
发表时间：
1999-12-01
期刊：
影响因子：
2
通讯作者：
Pattison, PE
中科院分区：
文献类型：
--
作者：
Conlon, EG;Lovegrove, WJ;Pattison, PE
采用双参数Rasch评定量表模型测量视觉不适。最初的研究发现，经常出现严重头痛、视觉性阅读困难和有效阅读时间短的参与者会经历更严重的视觉不适。通过四个实验验证了该测量仪器的有效性。在实验1和2中，对视觉不适量表的低、中、高分者报告了不愉快的躯体和知觉副作用或不愉快的评分。结果发现，得分较高的人报告了更多令人不快的副作用，并在空间频率范围内评价了方波图案，而字母图案比得分较低的人更令人不快和扭曲。在实验3和4中，这些主观发现被扩展到性能。效率是通过抄写和阅读任务来衡量的。结果发现，那些在视觉不适量表上得分高的人比其他人工作效率低。结果表明，模式敏感个体在观看模式时所产生的躯体和知觉上的不良副作用会导致其表现困难。视觉不适量表是测试这些困难程度的可靠和有效的措施。
A two-parameter Rasch Rating Scale model was developed to measure visual discomfort. Initially it was found that participants reporting frequent severe headache, reading difficulties of a visual nature, and short effective reading times experienced more severe visual discomfort. The validity of this measurement instrument was tested in four experiments. In Experiments 1 and 2 reports of unpleasant somatic and perceptual side-effects or ratings of unpleasantness were obtained for low, moderate, and high scorers on the Visual Discomfort Scale. It was found that those with higher scores reported a greater number of unpleasant side-effects and rated square-wave patterns across the spatial frequency range, and a letter pattern as more unpleasant and distorted to view than those with low scores on the scale. In Experiments 3 and 4 these subjective findings were extended to performance. Efficiency was measured using a copying and reading task. It was found that those obtaining high scores on the Visual Discomfort Scale performed with less efficiency than others. It was concluded that experience of unpleasant somatic and perceptual side-effects from pattern viewing produce performance difficulties in individuals who we sensitive to pattern. The Visual Discomfort Scale is a reliable and valid measure for testing the extent of these difficulties.