Recanzone Gregg H, Cohen Yale E
Center for Neuroscience and Department of Neurobiology, Physiology and Behavior, University of California at Davis, One Shields Avenue, Davis, CA 95616, USA.
Behav Brain Res. 2010 Jan 5;206(1):1-7. doi: 10.1016/j.bbr.2009.08.015. Epub 2009 Aug 15.
Over a decade ago it was proposed that the primate auditory cortex is organized in a serial and parallel manner in which there is a dorsal stream processing spatial information and a ventral stream processing non-spatial information. This organization is similar to the "what"/"where" processing of the primate visual cortex. This review will examine several key studies, primarily electrophysiological, that have tested this hypothesis. We also review several human-imaging studies that have attempted to define these processing streams in the human auditory cortex. While there is good evidence that spatial information is processed along a particular series of cortical areas, the support for a non-spatial processing stream is not as strong. Why this should be the case and how to better test this hypothesis is also discussed.
十多年前,有人提出灵长类动物的听觉皮层是以串行和平行方式组织的,其中存在一个处理空间信息的背侧流和一个处理非空间信息的腹侧流。这种组织类似于灵长类动物视觉皮层的“什么”/“哪里”处理方式。本综述将审视几项主要是电生理学的关键研究,这些研究检验了这一假设。我们还回顾了几项人类成像研究,这些研究试图在人类听觉皮层中界定这些处理流。虽然有充分证据表明空间信息是沿着特定的一系列皮层区域进行处理的,但对非空间处理流的支持并不那么有力。本文还讨论了为何会出现这种情况以及如何更好地检验这一假设。