Attention Allocation for Voluntary Smooth Eye Movements

自愿平滑眼球运动的注意力分配

• 批准号: 8404009
• 负责人: STEPHEN J HEINEN
• 金额: $ 31.58万
• 依托单位: SMITH-KETTLEWELL EYE RESEARCH INSTITUTE
• 依托单位国家: 美国
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8404009
• 关键词: Address; Age related macular degeneration; Attention; Beryllium; Blindness; Characteristics; Cognitive; Coupled; Data; Developed Countries; Discrimination; Elements; Eye; Eye Movements; Eye diseases; Frequencies; Knowledge; Learning; Macular degeneration; Measures; Monitor; Motion; Movement; Patients; Performance; Peripheral; Process; Resources; Retina; Retinal; Saccades; Signal Transduction; Smooth Pursuit; Source; Spottings; Stimulus; System; Translating; Vision; Visual impairment; Work; flexibility; fovea centralis; improved; information processing; interest; luminance; oculomotor; parvocellular; public health relevance; research study; retinal stimulation

Project Summary Smooth pursuit is usually studied with small, spot stimuli, yet extended natural objects stimulate peripheral retina and have features of interest. It is unknown how peripheral motion interacts with pursuit, or how attention is allocated to features during it. We have evidence that peripheral motion improves pursuit by minimizing saccades, and that attention is not locked to the fovea, but can be allocated flexibly to the periphery when the foveal pursuit burden is reduced. Furthermore, pilot data show that merely diverting attention from the fovea improves pursuit. It follows that a motion system incorporating peripheral retina can drive ocular pursuit more smoothly and allow an attentive process to simultaneously monitor local motion features, and our pilot data support this hypothesis. In addition we find that attentional resources for these pursuit and feature monitoring systems appear to be separate. Specific Aims are: Aim 1) Is attention allocation during pursuit flexible? Experiments will assess attention allocation under conditions that manipulate foveal attention demands while controlling for low-level features such as luminance transients. Aim 2) Does foveal attention increase saccades during pursuit? Experiments in this aim measure pursuit and manipulate attention and the locus of retinal stimulation. Aim 3) Do multi-element stimuli simultaneously support independent eye and attention movements? Experiments investigate whether attentional resources for pursuit and feature tracking are independent using attention operating characteristic (AOC) analysis. Other experiments will determine if only the attended elements are pursued, and if they are, if attention still arises from two sources.

项目摘要 通常用小的斑点刺激来研究平滑的追击 视网膜，具有感兴趣的特征。尚不清楚外围运动如何与追求相互作用，或者如何关注 在其过程中分配给功能。我们有证据表明外围运动通过最小化来改善追求 扫视，这种注意力不被锁定在中央凹上，而是可以灵活地分配给外围 凹起的追求负担减轻了。此外，飞行员数据显示，仅将注意力转移到中央凹 改善追求。因此，结合外围视网膜的运动系统可以更多地推动眼球追踪 平稳，并允许一个细心的过程同时监视本地运动功能，而我们的飞行员数据 支持这一假设。此外，我们发现这些追求和功能监控的注意力资源 系统似乎是独立的。具体目的是： 目标1）在追求期间的注意力分配是否灵活？ 实验将评估在操纵Foveal注意需求的条件下的注意力分配，而 控制低级特征，例如亮度瞬变。 目标2）中央凹是否会增加追捕过程中的扫视？ 此目标的实验衡量追求并操纵注意力和视网膜刺激的轨迹。 目标3）多元素刺激是否同时支持独立的眼睛和注意力运动？ 实验研究追求和特征跟踪的注意力资源是否独立使用 注意操作特征（AOC）分析。其他实验将确定是否仅参加 元素将被追求，如果是，如果关注仍然来自两个来源。