STRUCTURE-FROM-MOTION IN VISUAL CORTEX

视觉皮层的运动结构

• 批准号: 2162853
• 负责人: RALPH M SIEGEL
• 金额: $ 12.52万
• 依托单位: RUTGERS THE STATE UNIV OF NJ NEWARK
• 依托单位国家: 美国
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-09-30 至 1997-09-29
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2162853
• 关键词: Macaca mulatta; biological models; form /pattern perception; motion perception; neural information processing; visual cortex; visual stimulus

The long term objective of the project is a complete description of how the two and three-dimensional structure of objects or the environment can be obtained from visual motion in human subjects. The awake behaving monkey is used as a model for such visual processing. Previous studies (Siegel and Andersen, 1988) indicate both species have similar motion psychophysics using highly controlled stimuli consisting of large numbers of moving dots validating the use of the non-human primate as a model for human subjects. Electrophysiological recordings in the awake behaving monkey will be used to explore higher level motion processing. Single neurons will be recorded while the monkey is performing the earlier published psychophysical tasks. The recording study will first phenomenologically describe the properties of neurons in the cortical visual areas of the inferior parietal lobule and "anatomically near" cortex when presented with the structure from motion stimulus. The receptive field structures of these neurons will be examined in order to determine if the response may be explained by local receptive field mechanisms. A comparison will be made between the response of the neurons to the random dot stimuli and to the movement of bars which have the same underlying motion transformation. Finally, the interactions between the motion stimulus and the position of the eye in the orbit will be explored in an attempt to understand how motion is used in the perception of surrounding space. This study is related to the mental health of individuals in that it seeks to understand how is of incoming visual stimuli is performed by the inferior parietal lobule. The understanding of such mechanisms is necessary in understanding the damage that occurs following stroke and other cerebral compromise.

该项目的长期目标是完整的描述 物体或环境的两维结构可以 可以从人类受试者的视觉运动中获得。醒着的行为 猴子被用作这种视觉处理的模型。先前的研究 （Siegel和Andersen，1988）表明这两个物种都具有相似的运动 使用高数量的高度控制刺激的心理物理学 移动点，以验证非人类灵长类动物的使用为模型 人类主题。在清醒的行为中的电生理记录 猴子将用于探索更高级别的运动处理。单身的 猴子表演较早时，将记录神经元 出版的心理物理任务。录音研究将首先 现象学上描述了皮质中神经元的特性 下顶叶的视觉区域和“解剖上附近” 皮层与运动刺激的结构一起出现。这 将检查这些神经元的接受场结构，以便 确定响应是否可以通过局部接受场来解释 机制。神经元的反应将进行比较 对随机点刺激和具有相同相同的条的运动 基础运动转换。最后， 将探索运动刺激和眼睛在轨道中的位置 试图了解如何在感知中使用运动 周围空间。这项研究与 个人试图了解传入的视觉 刺激由下顶叶进行。对 这种机制对于理解发生的损害是必要的 中风和其他大脑妥协。