FUNCTIONAL ANALYSIS OF EXTRASTRIATE VISUAL CORTEX

提出了一种利用功能磁学的研究方案 磁共振成像(FMRI)分析视觉信息是如何 在人眼视皮层中进行组织和处理。使用以下方法 都是由这个团队开发或改进的，九个视觉 每个受试者的大脑皮质感兴趣区域将使用功能磁共振成像进行识别 并以平面化的皮质格式显示。我们将追求四个目标。 首先，如何以及在哪里由不同类型的 视觉提示(亮度、色调、动作等)是在视觉上处理的 大脑皮层将被调查。第二，脑部核磁共振反应的变化 对大视场亮度、颜色和空间变化的响应 频率将被测量。第三，关于视觉的具体问题 将讨论运动处理。第四，方向敏感度 将通过检查瞬变来评估不同的视觉区域 对方向变化的反应。

A program of research is proposed to use functional magnetic resonance imaging (FMRI) to analyze how visual information is organized and processed in human visual cortex. Using methods that have either been developed or refined by this group, nine visual cortical areas of interest will be identified in each subject using fMRI and displayed on a flatted cortical format. Four aims will be pursued. First, how and where visual contours defined by different types of visual cues (luminance, hue, motion, etc.) are processed in visual cortex will be investigated. Second, changes in fMRI responses in response to large-field changes in luminance, color, and spatial frequency will be measured. Third, specific questions about visual motion processing will be addressed. Fourth, orientation sensitivity in different visual areas will be assessed by examining transient responses to changes in orientation.