Hayworth Kenneth J, Biederman Irving
Neuroscience Program, University of Southern California, Hedco Neurosciences Bldg, Los Angeles, CA 90089-2520, USA.
Vision Res. 2006 Nov;46(23):4024-31. doi: 10.1016/j.visres.2006.07.015. Epub 2006 Sep 18.
The lateral occipital complex (LOC), a cortical region critical for human object recognition, has been shown to primarily code the shape, rather than the surface properties, of an object. But what aspects of shape? Using an fMRI-adaptation (fMRI-a) paradigm in which subjects judged whether two contour-deleted images of objects were the same or different exemplars, virtually all the adaptation in LOC [especially in LOC's most anterior portion (pFs)] could be attributed to repetition of the parts, almost none to the repetition of local image features, such as lines or vertices, templates, or basic- or subordinate-level concepts of the object. These results support the hypothesis that the neural representation of shape in LOC is an intermediate one, encoding the parts of an object.
枕外侧复合体（LOC）是人类物体识别的关键皮质区域，已被证明主要编码物体的形状，而非表面属性。但形状的哪些方面呢？使用功能磁共振成像适应（fMRI-a）范式，让受试者判断两个轮廓删除的物体图像是相同还是不同的示例，几乎所有LOC中的适应（尤其是在LOC最靠前的部分pFs）都可归因于部分的重复，几乎没有归因于局部图像特征（如线条或顶点）、模板或物体的基本或从属级别概念的重复。这些结果支持了这样一种假设，即LOC中形状的神经表征是一种中间表征，对物体的各个部分进行编码。
