Eye Movements and Visual Working Memory

眼动和视觉工作记忆

基本信息

批准号：
8708866
负责人：
Andrew R Hollingworth
金额：
$ 28.81万
依托单位：
UNIVERSITY OF IOWA
依托单位国家：
美国
项目类别：
财政年份：
2006
资助国家：
美国
起止时间：
2006-09-30 至 2017-08-31
项目状态：
已结题

项目摘要

DESCRIPTION (provided by applicant): Intelligent, goal-directed behavior depends on orienting the eyes efficiently to task-relevant objects in the world. In previous work, we have demonstrated that the visual working memory (VWM) system exerts top-down control over saccade target selection, guiding the eyes to goal-relevant objects. Before a saccade, features of the saccade target are encoded into VWM. These are retained across the saccade and compared with object information when the eyes land. In the common circumstance that the eyes fail to land on the original target, remembered properties of the target are used to guide attention and gaze, automatically, toward a matching object, ensuring that the eyes are directed efficiently to the original target. This specific behavior reflects a general interactive relationship between saccade target selection and VWM: Selection of the saccade target object controls encoding into VWM, and the content of VWM, in turn, biases saccade target selection in favor of objects that match the features stored in memory. In the present project, we propose to explore the locus of the interaction between VWM and saccade target selection. We will test the hypothesis that VWM activation influences low-level sensory processing of saccade targets, influencing even the most rapid and elementary forms of saccadic orienting. In addition, we propose to examine core processing components of the interaction between VWM and gaze control, including 1) the ability to adapt VWM content and attentional biases on the basis of changing task demands and 2) the mechanisms by which saccade target properties are encoded in VWM. Finally, we will develop a neural field model that integrates current models eye movement planning and models of VWM, providing a formal framework for understanding their relationship. These studies will advance our understanding of the basic mechanisms of gaze control that support efficient interaction with objects and agents in the world.

描述（由申请人提供）：智能、目标导向的行为取决于有效地将眼睛定向到世界上与任务相关的物体。在之前的工作中，我们已经证明视觉工作记忆（VWM）系统对扫视目标选择进行自上而下的控制，引导眼睛看到与目标相关的物体。在扫视之前，扫视目标的特征被编码到 VWM 中。这些信息在整个扫视过程中都会被保留，并在眼睛落地时与物体信息进行比较。在眼睛无法落在原始目标上的常见情况下，目标的记忆属性用于自动引导注意力和凝视到匹配的物体，确保眼睛有效地指向原始目标。这种特定行为反映了扫视目标选择和 VWM 之间的一般交互关系：扫视目标对象的选择控制编码到 VWM 中，而 VWM 的内容反过来使扫视目标选择偏向于与内存中存储的特征匹配的对象。在本项目中，我们建议探索 VWM 和眼跳目标选择之间相互作用的轨迹。我们将测试以下假设：VWM 激活会影响扫视目标的低级感觉处理，甚至影响扫视定向的最快速和基本形式。此外，我们建议检查 VWM 和注视控制之间交互的核心处理组件，包括 1）根据不断变化的任务需求调整 VWM 内容和注意力偏差的能力，以及 2）扫视目标属性编码的机制在大众汽车管理中。最后，我们将开发一个神经场模型，整合当前的眼动规划模型和 VWM 模型，为理解它们的关系提供一个正式的框架。这些研究将增进我们对注视控制基本机制的理解，以支持与世界上的物体和代理的有效交互。