PARALLEL PATHWAYS IN PRIMATE VISUAL CORTEX

描述：我们建议使用病变研究来确定是否存在 人类和猕猴视觉中对颜色和形状信息的相似处理 皮层 对猕猴的研究将继续探索 单个皮质视觉区的贡献，目的是 确定反映每个地区独特的能力， 活动 我们已经发现，在近外纹视觉局部病变， 区域V2和V4，精确地引起复合体的视网膜损伤，但不是 基本的视觉功能 这些研究将扩展到 颞下视区TEO和TE的病变的影响， 他们的大部分输入来自上述皮层区域。 我们将使用 我们已经获得的关于外纹猕猴视觉的累积信息 探索人类视觉系统中的平行组织。 特别注意视神经近纹外的病变 因为损失的视觉分布可以帮助探索 人类和猕猴视觉皮层之间的差异 我们的研究将集中在人类 大脑色盲和视觉形式失认症，这是最 戏剧性的混乱表明人类的视觉皮层被组织成 功能模块

DESCRIPTION: We propose to use lesion studies to determine whether there is similar processing of color and form information in human and macaque visual cortex. Studies with macaque monkeys will continue to explore the contribution of individual cortical visual areas, with the goal of determining capabilities that are uniquely reflective of each area's activity. We have found that localized lesions in near-extrastriate visual areas V2 and V4, cause precisely retintopic losses of complex, but not fundamental, visual functions. These studies will be extended to the effects of lesions of inferotemporal visual areas TEO and TE, which receive much of their input from the above cortical areas. We will use the cumulated information we have obtained about extrastriate macaque visual areas to explore parallel organization in the human visual system. Particular attention will be paid to lesions of near extrastriate visual areas, since the visual distribution of losses can help explore parallels between human and macaque visual cortex. Our studies will focus on human cerebral achromatopsia and visual form agnosias, which are among the most dramatic disorders suggesting that human visual cortex is organized into functional modules.