Animals roll around the clock: The rotation invariance of ultrarapid visual processing
Animals roll around the clock: The rotation invariance of ultrarapid visual processing
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DOI：
10.1167/6.10.1
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发表时间：
2006-01-01
影响因子：
1.8
通讯作者：
Thorpe, Simon J.
中科院分区：
文献类型：
--
作者：
Guyonneau, Rudy;Kirchner, Holle;Thorpe, Simon J.
对人脸和动物进行分类所需的过程不仅速度很快，而且对倒置的抵抗力也很强。有人提出，这种分类性能可以使用图像内的方向的全局分布来实现，有趣的是，这一分布不会因倒置而改变。在这里，我们向受试者呈现了16个不同方向的两个同时发生的自然场景。在左、右半脑灰飞烟灭的情况下，我们让他们跳到有动物的一侧。我们报告说，人类的表现出人意料地是旋转不变的，因为反应时间相似，准确性在不同方向上都非常稳定。结果表明，这种形式的快速目标检测不能依赖于图像中方向的全局分布。一种替代方案是，受试者转而使用局部特征组合，这些特征对动物的存在具有诊断作用。
The processing required to categorize faces and animals is not only rapid but also remarkably resistant to inversion. It has been suggested that this sort of categorization performance could be achieved using the global distribution of orientations within the image, which interestingly is unchanged by inversion. Here, we presented subjects with two natural scenes at 16 different orientations that were simultaneously. ashed in the left and right hemifield and we asked them to make a saccade to the side containing an animal. We report that human performance is surprisingly rotation invariant as reaction times were similar and accuracy remarkably stable across orientations. The results imply that this form of rapid object detection could not depend on the global distribution of orientations within the image. One alternative is that subjects are instead using local combinations of features that are diagnostic for the presence of an animal.