Transformation of shape information in the ventral pathway

被引:128
作者
Connor, Charles E. [1 ]
Brincat, Scott L.
Pasupathy, Anitha
机构
[1] Johns Hopkins Univ, Krieger Mind Brain Inst, Baltimore, MD 21287 USA
[2] Johns Hopkins Univ, Dept Neurosci, Baltimore, MD 21287 USA
关键词
D O I
10.1016/j.conb.2007.03.002
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Object perception seems effortless to us, but it depends on intensive neural processing across multiple stages in ventral pathway visual cortex. Shape information at the retinal level is hopelessly complex, variable and implicit. The ventral pathway must somehow transform retinal signals into much more compact, stable and explicit representations of object shape. Recent findings highlight key aspects of this transformation: higher-order contour derivatives, structural representation in object-based coordinates, composite shape tuning dimensions, and long-term storage of object knowledge. These coding principles could help to explain our remarkable ability to perceive, distinguish, remember and understand a virtual infinity of objects.
引用
收藏
页码:140 / 147
页数:8
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