School of Psychology, University of Western Australia, 35 Stirling Highway, Crawley WA 6009, Australia.
J Exp Psychol Hum Percept Perform. 2013 Apr;39(2):313-7. doi: 10.1037/a0031568. Epub 2013 Feb 11.
Despite the discovery of body-selective neural areas in occipitotemporal cortex, little is known about how bodies are visually coded. We used perceptual adaptation to determine how body identity is coded. Brief exposure to a body (e.g., anti-Rose) biased perception toward an identity with opposite properties (Rose). Moreover, the size of this aftereffect increased with adaptor extremity, as predicted by norm-based, opponent coding of body identity. A size change between adapt and test bodies minimized the effects of low-level, retinotopic adaptation. These results demonstrate that body identity, like face identity, is opponent coded in higher-level vision. More generally, they show that a norm-based multidimensional framework, which is well established for face perception, may provide a powerful framework for understanding body perception.
尽管在枕叶颞叶皮质中发现了具有身体选择性的神经区域，但对于身体是如何被视觉编码的知之甚少。我们使用感知适应来确定身体身份是如何被编码的。短暂地接触一个身体（例如，反罗丝）会使感知偏向具有相反特征的身份（罗丝）。此外，这种后效的大小随着适应器的极端而增加，这与基于规范的身体身份的对立编码相一致。适应体和测试体之间的大小变化最小化了低级、视网膜适应的影响。这些结果表明，身体身份与面部身份一样，在高级视觉中是对立编码的。更一般地说，它们表明，一个基于规范的多维框架，该框架已经在面部感知中得到很好的建立，可能为理解身体感知提供一个强大的框架。
