Foveal and peripheral influences on the control of gaze and attention during scene perception: Experiments and mathematical modeling

中央凹和周边对场景感知过程中注视和注意力控制的影响：实验和数学建模

• 批准号: 221217560
• 负责人: Professor Dr. Ralf Engbert
• 金额: --
• 依托单位: Abteilung Allgemeine Psychologie I (Kognitive Psychologie)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/221217560?language=en
• 关键词: Foveal; peripheral; influences; control; gaze

High-resolution vision is limited to the fovea of our visual system, since visual information in the periphery is blurred because of limited acuity. The fovea is particularly sensitive for medium and high spatial frequencies, while the periphery is optimized for low spatial frequencies. Therefore, foveal information is used for the identification and detailed analysis of fixated stimuli and peripheral information is important for spatial orienting and selection of the upcoming saccade target. The scientific goal of the project is the characterization of the influence of foveal and peripheral information processing on the temporal control of eye movements and attention in natural scenes based on a process model. During the first funding phase, we carried out 9 experiments using gaze-contingent high- and low-pass filtering in the central and peripheral visual field. Furthermore, we developed a mathematical model for the control of fixation durations. In the model, the central assumption was that there are opposing dynamical influences of foveal and peripheral processing on the control of fixation duration. Model parameters could be identified based on experimental data from gaze-contingent filtering. The main research goals for the second funding phase are as follows: (1) Investigation of foveal and peripheral influences on the temporal control of eye movements across task variations, (2) empirical description of the range of spatial frequencies and color, with preferential use in different regions of the visual field over time, (3) development of a mathematical model of saccade generation during scene viewing, which integrates fixation durations and spatial control. (4) Finally, we plan to create an annotated reference corpus of eye-movement data using gaze-contingent spatial frequency filtering of natural scenes. This corpus will be provided for the validation of models of visual attention and eye-movement control.

高分辨率视觉仅限于我们视觉系统的中央凹，因为周边的视觉信息由于有限的敏锐度而变得模糊。中央凹对中、高空间频率特别敏感，而外围则对低空间频率进行优化。因此，中央凹信息用于识别和详细分析的注视刺激和周边信息是重要的空间定向和选择即将到来的眼跳目标。该项目的科学目标是表征中央凹和周边信息处理对基于过程模型的自然场景中的眼动和注意力的时间控制的影响。在第一个资助阶段，我们进行了9个实验，使用视情况而定的高和低通滤波在中央和周边视野。此外，我们还建立了一个控制注视持续时间的数学模型。在该模型中，中心假设是，有相反的动力学影响的中央凹和周边处理的控制注视持续时间。模型参数可以根据实验数据从凝视相依滤波识别。 第二阶段资助的主要研究目标如下：（1）调查中央凹和周边对跨任务变化的眼运动的时间控制的影响，（2）对空间频率和颜色的范围的经验描述，随着时间的推移优先用于视野的不同区域，（3）开发在场景观看期间扫视产生的数学模型，其整合了注视持续时间和空间控制。(4)最后，我们计划创建一个注释的参考语料库的眼动数据，使用凝视的空间频率过滤的自然场景。该语料库将提供视觉注意力和眼动控制模型的验证。