Saccadic and smooth-pursuit eye movements during reading of drifting texts
Saccadic and smooth-pursuit eye movements during reading of drifting texts
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DOI：
10.1167/13.10.8
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发表时间：
2013-01-01
影响因子：
1.8
通讯作者：
Schuetz, Alexander C.
中科院分区：
文献类型：
--
作者：
Valsecchi, Matteo;Gegenfurtner, Karl R.;Schuetz, Alexander C.
阅读是一种复杂的视觉行为，其特征在于注视和扫视运动的交替。尽管漂流文本在各种环境中广泛使用，但对这些条件下的眼动知之甚少。在这里，我们研究了在阅读的文本，这是水平或垂直漂移在不同的速度时的眼动行为。与以前的报告一致，漂移文本阅读的交替顺利追求和扫视眼球运动。详细的分析揭示了几个平滑的追求和扫视之间的相互作用。一方面，在执行扫视后，平滑追踪的增益增加。另一方面，对于水平漂移的文本，眼跳和追踪在相反的方向上执行，眼跳的峰值速度降低。此外，我们表明，从静态文本的阅读的著名的研究结果延伸到漂移的文本，如首选的观看位置，倒置的最佳观看位置，以及扫视幅度和随后的追求/固定持续时间之间的相关性。一般来说，个人的眼动参数，如扫视幅度和固定/追求持续时间相关的跨自主节奏的静态文本的阅读和时间限制的静态和漂移文本的阅读。这些结果表明，基础视觉研究的结果也适用于漂流文本的阅读。类似地，基本的阅读原则以类似的方式适用于静态和漂移文本的阅读。这就把对漂移文本的阅读解释为一种视觉行为，这种视觉行为除了受到认知加工和语言加工的影响外，还受到低水平眼动控制的影响。
Reading is a complex visuomotor behavior characterized by an alternation of fixations and saccadic eye movements. Despite the widespread use of drifting texts in various settings, very little is known about eye movements under these conditions. Here we investigated oculomotor behavior during reading of texts which were drifting horizontally or vertically at different speeds. Consistent with previous reports, drifting texts were read by an alternation of smooth-pursuit and saccadic eye movements. Detailed analysis revealed several interactions between smooth pursuit and saccades. On one side, the gain of smooth pursuit was increased after the execution of a saccade. On the other side, the peak velocity of saccades was reduced for the horizontally drifting text, in which saccades and pursuit were executed in opposite directions. In addition, we show that well-known findings from the reading of static texts extend to drifting text, such as the preferred viewing location, the inverted optimal viewing position, and the correlation between saccade amplitude and subsequent pursuit/fixation duration. In general, individual eye-movement parameters such as saccade amplitude and fixation/pursuit durations were correlated across self-paced reading of static text and time-constrained reading of static and drifting texts. These results show that findings from basic oculomotor research also apply to the reading of drifting texts. Similarly, basic reading principles apply to the reading of static and drifting texts in a similar way. This exemplifies the reading of drifting text as a visuomotor behavior which is influenced by low-level eye-movement control as well as by cognitive and linguistic processing.