FUNCTIONAL ANALYSIS OF EXTRASTRIATE VISUAL CORTEX

提出了利用功能磁 核磁共振成像（FMRI）来分析视觉信息是如何 在人类视觉皮层中组织和处理。他们使用的技术 已经开发或完善了这个小组，九个视觉 将使用功能磁共振成像在每个受试者中识别感兴趣的皮质区 并以扁平的皮质格式显示。将实现四个目标。 首先，如何以及在哪里定义不同类型的视觉轮廓， 视觉提示（亮度、色调、运动等）在视觉上被处理 将对皮质进行研究。第二，功能磁共振成像反应的变化， 对亮度、颜色和空间的大视场变化的响应 频率将被测量。第三，关于视觉的具体问题 将解决运动处理。第四，方向敏感性， 不同的视觉区域将通过检查短暂的 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.