Attention Allocation for Voluntary Smooth Eye Movements

项目摘要 平滑追踪通常是用小的、点的刺激来研究的，然而扩展的自然物体刺激外周 视网膜并具有感兴趣的特征。目前还不清楚周边运动如何与追求相互作用，或者注意力如何与追求相互作用。 我们有证据表明，外围运动通过最小化 扫视，注意力并不锁定在中央凹，但可以灵活地分配到周边时， 减少了中央凹追踪负担。此外，飞行员数据显示，仅仅将注意力从中央凹转移， 更好的追求。因此，结合周边视网膜的运动系统可以更好地驱动眼球追踪 平稳，并允许一个细心的过程，同时监测当地的运动特征，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资源 系统似乎是分开的。具体目标是： 目标1）在追求过程中注意力的分配是否灵活？ 实验将评估在操纵中央凹注意力需求的条件下的注意力分配， 控制诸如亮度瞬变的低水平特征。 目标2）中央凹注意是否增加了追踪过程中的眼跳？ 在这个目标的实验测量追求和操纵注意力和视网膜刺激的轨迹。 目的3）多元素刺激是否同时支持独立的眼动和注意力运动？ 实验研究是否注意资源的追求和特征跟踪是独立的使用 注意操作特性（AOC）分析。其他实验将确定是否只有参加 如果是的话，注意力是否仍然来自两个来源。

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.