The perceptual span is the range of available information that can be obtained in reading processing.
阅读知觉广度是指在阅读过程中一次注视所能知觉到的对阅读认知加工有用的信息区域。
参考来源 - 中学生字词阅读知觉广度的眼动研究·2,447,543篇论文数据，部分数据来源于NoteExpress
To use Eye-tracking system is one of the effective methods to explore the perceptual span in reading.
利用眼动仪作为研究工具已成为研究阅读知觉广度的有效手段之一。
Experiment one: Eye movement studies on the perceptual span of Chinese reading under the moving window condition on character.
实验二：词窗口条件下中文阅读知觉广度的眼动研究。
The eye-movement-contingent display change technique was used in this study to explore the perceptual span of the fifth graders.
采用“呈现随眼动变化技术”对小学五年级学生的阅读知觉广度进行了眼动研究。
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