Defining the cortical visual systems: "What", "Where", and "How"
Defining the cortical visual systems: "What", "Where", and "How"
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DOI：
10.1016/s0001-6918(01)00021-x
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发表时间：
2001-04-01
影响因子：
1.8
通讯作者：
Proffitt, DR
中科院分区：
文献类型：
--
作者：
Creem, SH;Proffitt, DR
视觉系统历史上被定义为由至少两个服务于物体和空间视觉的广泛子系统组成。这些视觉处理流在结构上被组织为大脑中的两条不同的通路，在功能上则根据它们介导的任务类型进行组织。 Ungerleider 和 Mishkin 的经典定义将腹侧“什么”流标记为处理物体信息，将背侧“何处”流标记为处理空间信息。最近，古德尔和米尔纳重新定义了两种视觉系统，重点关注视觉信息为不同目标而转换的不同方式。他们将背侧流重新标记为“如何”系统，使用以自我为中心的参考系转换视觉信息，为直接行动做准备。本文回顾了心理物理学、神经生理学、神经心理学和神经影像学的最新研究，以定义腹侧和背侧视觉处理流的作用。我们讨论了一种可能的解决方案，该解决方案允许在后顶叶内功能和结构上组织“何处”和“如何”系统。 (C) 2001 Elsevier Science B.V. 保留所有权利。
The visual system historically has been defined as consisting of at least two broad subsystems subserving object and spatial vision. These visual processing streams have been organized both structurally as two distinct pathways in the brain, and functionally for the types of tasks that they mediate. The classic definition by Ungerleider and Mishkin labeled a ventral "what" stream to process object information and a dorsal "where" stream to process spatial information. More recently, Goodale and Milner redefined the two visual systems with a focus on the different ways in which visual information is transformed for different goals. They relabeled the dorsal stream as a "how" system for transforming visual information using an egocentric frame of reference in preparation for direct action. This paper reviews recent research from psychophysics, neurophysiology, neuropsychology and neuroimaging to define the roles of the ventral and dorsal visual processing streams. We discuss a possible solution that allows for both "where" and "how" systems that are functionally and structurally organized within the posterior parietal lobe. (C) 2001 Elsevier Science B.V. All rights reserved.