Jainta Stephanie, Jaschinski Wolfgang, Wilkins Arnold J
Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany.
J Vis. 2010 Nov 2;10(13):2. doi: 10.1167/10.13.2.
We investigated the way in which binocular coordination in reading is affected by the spatial structure of text. Vergence eye movements were measured (EyeLink II) in 32 observers while they read 120 single German sentences (Potsdam Sentence Corpus) silently for comprehension. The similarity in shape between the neighboring strokes of component letters, as measured by the first peak in the horizontal auto-correlation of the images of the words, was found to be associated with (i) a smaller minimum fixation disparity (i.e. vergence error) during fixation; (ii) a longer time to reach this minimum disparity and (iii) a longer overall fixation duration. The results were obtained only for binocular reading: no effects of auto-correlation could be observed for monocular reading. The findings help to explain the longer reading times reported for words and fonts with high auto-correlation and may also begin to provide a causal link between poor binocular control and reading difficulties.
我们研究了文本的空间结构对阅读中双眼协调性的影响方式。在32名观察者默读120个德语单句（波茨坦句子语料库）以理解内容时，使用EyeLink II测量了他们的聚散眼球运动。通过单词图像水平自相关的第一个峰值测量的组成字母相邻笔画之间形状的相似性，被发现与以下因素有关：（i）注视期间较小的最小注视视差（即聚散误差）；（ii）达到此最小视差所需的较长时间；（iii）较长的总体注视持续时间。这些结果仅在双眼阅读中获得：单眼阅读时未观察到自相关的影响。这些发现有助于解释对于具有高自相关性的单词和字体所报告的较长阅读时间，并且可能也开始在双眼控制不佳与阅读困难之间提供因果联系。
