Binocular fusion during reading

阅读时双眼融合

• 批准号: 179786904
• 负责人: Dr. Stephanie Jainta
• 金额: --
• 依托单位: School of Psychology and Humanities
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/179786904?language=en
• 关键词: Binocular; fusion; during; reading

Reading is an incredibly valuable skill in today’s society, and it is used in thousands of day-today tasks. It is, therefore, vital that we develop detailed psychological theories about this important human visuo-cognitive function. In order to accurately model eye movements during reading - and then map aspects of them onto the psychological processes underpinning human language comprehension - it is critical to know exactly what people perceive. We read with both eyes, and therefore, visual processing necessarily involves the creation of a single perceptual representation from two independent visual signals, one from each eye. One neglected aspect of occulomotor behaviour during reading is the coordination of both eyes: binocular vision requires that the vergence angle between the two visual axes is adjusted to allow for processes of fusion. Fixation disparity (slight vergence errors) and the process of fusion are core phenomena in relation to binocular coordination, yet, to date, there is no single unified theoretical account of these phenomena. Fusional processes are, very fundamentally, disparity driven. The time course of fusional processes during reading is still unclear. In the proposed research, we will systematically explore this time course by manipulating the amount of binocular information (foveally and parafoveally) present after saccade execution. Further, in order to address the question of the amount of fixation disparity that can be tolerated whilst fusion is still attained, we will manipulate the absolute disparity of the two visual inputs after saccade execution. Both experimental manipulations will be realized by means of an advanced experimental technique termed saccade contingent change methodology.

在当今社会，阅读是一项极其宝贵的技能，它被用在成千上万的日常任务中。因此，至关重要的是，我们必须发展关于这一重要的人类视觉认知功能的详细的心理学理论。为了准确地模拟阅读过程中的眼球运动，然后将眼球运动的各个方面映射到支撑人类语言理解的心理过程中，准确地了解人们所感知的是至关重要的。我们用两只眼睛阅读，因此，视觉处理必然涉及从两个独立的视觉信号创建单一的知觉表征，每只眼睛一个。在阅读过程中，隐蔽运动行为被忽视的一个方面是双眼的协调：双目视觉要求调整两个视轴之间的会聚角度，以允许融合过程。注视差(轻微的会聚误差)和融合过程是与双眼协调有关的核心现象，然而，到目前为止，对于这些现象还没有一个统一的理论解释。从根本上讲，融合过程是由差异驱动的。阅读过程中融合过程的时间进程仍然不清楚。在拟议的研究中，我们将通过操纵眼跳执行后双眼(中心凹和副中心凹)的信息量来系统地探索这一时间过程。此外，为了解决在仍然获得融合的情况下可以容忍的注视视差的量的问题，我们将在扫视执行后操纵两个视觉输入的绝对视差。这两种实验操作都将通过一种名为扫视或有变化方法论的先进实验技术来实现。