VISUAL FUNTIONS OF THE PULVINAR

枕骨的视觉功能

• 批准号: 3256615
• 负责人: DAVID B BENDER
• 金额: $ 18.55万
• 依托单位: STATE UNIVERSITY OF NEW YORK AT BUFFALO
• 依托单位国家: 美国
• 财政年份: 1978
• 资助国家: 美国
• 起止时间: 1978-12-01 至 1994-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3256615
• 关键词: Macaca; autoradiography; brain mapping; electrophysiology; experimental brain lesion; fluorescent dye /probe; neural information processing; neuroanatomy; neurophysiology; radiotracer; stereotaxic techniques; superior colliculus; thalamus; visual cortex; visual pathways

DESCRIPTION: (Adapted from the applicant's abstract.) The pulvinar is the largest nucleus in the thalamus. It is closely interconnected with many areas of visual cortex, with the temporal and parietal lobes, and with the superior colliculus. The pulvinar may play a crucial role in recovery of vision following blindness of central origin, and it has been implicated in the effects of stroke in man. It is thought to play an important role in the central processing of visual information and in the integration of eye movements with visual perception. The nature of that role is poorly understood. This research is part of a long-term project to research is expected to clarify both anatomical and functional relationships between subdivisions of visual cortex and two subdivisions of the pulvinar, and the functional significance of the tectopulvinar pathway. One goal is to determine the pattern of anatomical connections between pulvinar and cortex using axonal transport techniques. A second is to find out how information about relative motion is encoded in the pulvinar. A third aim examines the possibility that information about relative motion reaches the pulvinar via the tectopulvinar projection. We will also test the possibility that the pulvinar relays an eye movement signal from colliculus to cortex for use in visual processing. These experiments will be done using microelectrode recording techniques. A fifth aim is to test the possibility that the pulvinar plays a crucial role in the perceptual integration of form and motion cues.

描述：（根据申请人的摘要进行了改编。）Pulvinar是 丘脑中最大的核。 它与许多 视觉皮层的区域，颞叶和顶叶，以及 上丘。 pulvinar在恢复中可能起着至关重要的作用 视力遵循中心的盲目性，它与 中风对人的影响。 人们认为在 视觉信息的中心处理和眼睛的整合 具有视觉感知的运动。 该角色的性质很差 理解。 这项研究是研究长期研究的一部分是 期望阐明解剖学和功能关系 视觉皮层的细分和pulvinar的两个细分，以及 托管途径的功能意义。 一个目标是确定解剖联系的模式 使用轴突运输技术的脉冲和皮层。 第二个是找到 弄清楚有关相对运动的信息是在Pulvinar中编码的。 一个 第三目的检查有关相对运动的信息的可能性 通过Tectopulvinar投影到达脉冲。 我们还将测试 Pulvinar传递眼睛移动信号的可能性 用于视觉处理的皮层的胶囊。 这些实验会 使用微电极记录技术完成。 第五个目标是测试 pulvinar在感知中起着至关重要的作用 形式和运动提示的整合。