EYE MOVEMENTS DURING VISUAL SEARCH IN NATURAL SCENE

自然场景中视觉搜索过程中的眼球运动

• 批准号: 6339385
• 负责人: Mary M Hayhoe
• 金额: $ 3.77万
• 依托单位: UNIVERSITY OF ROCHESTER
• 依托单位国家: 美国
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2001-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6339385
• 关键词: biomedical resource; cognition; eye; nervous system; psychology

The measurement of eye movements has proven to be a powerful tool for the study of the components of complex visuo-motor behaviors. As described above, we have developed a computational theory to describe aspects of the task, including visual search and saccade targetting. At this point the evidence suggests that parietal cortex is involved in selection of targets in goal-directed behavior such a saccade targetting, so we were anxious to get evidence of the neural basis of the proposed computational structures. Consequently we are examining the behavior of patients with localized parietal lesions on our block-copying task. Tests done by Merigan and Shimosaki show that patients who pass standard neuropsychological tests may show up as very abnormal on our eye-movement tasks. Although the task can be performed by the subject, eye movement monitoring reveals unusual eye movement patterns which we speculate might reflect difficulties in saccade targeting. We also extended the testing of patients with parietal lobe lesions to a spatial memory task developed within the resource by post-doctoral stu-dent Greg Zelinski. Patients with parietal lobe lesions appear unable to use the spatial location information that is provided immediately prior to the search task. Control experiments indicate that this inability is not due to any deficits in object recognition, general memory, or the ability to locate named objects. Rather, it appears to be a defect specific to the processing of visual-spatial information.

事实证明，眼球运动的测量是一种强大的工具 为了研究复杂的视觉运动行为的组成部分。 作为 上面描述的是，我们开发了一种计算理论来描述 任务的各个方面，包括视觉搜索和扫视目标。 在这一点上，证据表明壁皮层涉及 在目标指导行为中的目标中选择这样的扫视 定位，因此我们急于获得神经基础的证据 提出的计算结构。 因此我们正在检查 我们在我们的局部顶叶病变的患者 块复制任务。 Merigan和Shimosaki进行的测试表明 通过标准神经心理学检查的患者可能会显示为 我们的眼动任务非常异常。 虽然任务可以是 由主题进行的，眼动监测显示出异常的眼睛 我们推测的运动模式可能反映了困难 扫视目标。 我们还扩展了患者的测试 顶叶病变到在空间内存任务中开发的空间内存任务 博士后stu-dent Greg Zelinski的资源。 患者 顶叶病变似乎无法使用空间位置 搜索任务之前立即提供的信息。 控制实验表明，这种无法 对象识别，一般内存或能力的缺陷 找到命名对象。 相反，它似乎是特定于 视觉空间信息的处理。