Pigeons use low rather than high spatial frequency information to make visual category discriminations.

IF 1.3 4区 心理学
Stephen E G Lea, Guido De Filippo, Ruth Dakin, Christina Meier
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引用次数: 7

Abstract

Pigeons were trained to discriminate photographs of cat faces from dog faces. They were then presented with test stimuli involving high- and low-pass spatial frequency filtering. Discrimination was maintained with both types of filtered stimuli, though it was increasingly impaired the more information was filtered out, and high-pass filtering impaired discrimination more than low-pass filtering. The pigeons were then exposed to hybrid stimuli in which high-pass filtered dog faces were combined with low-pass filtered cat faces, and vice versa. Response to hybrid stimuli was determined more by the low spatial frequency content than by the high-frequency content, whereas humans viewing the same stimuli at corresponding viewing distance respond more strongly to the high-frequency content. These results are unexpected given that, compared with humans, pigeons' behavior tends to be controlled by the local details of visual stimuli rather than their global appearance.

鸽子使用低而不是高的空间频率信息来进行视觉类别区分。
鸽子被训练来区分猫脸和狗脸的照片。然后,他们接受了包括高通和低通空间频率滤波的测试刺激。两种类型的过滤刺激都保持了辨别能力,但随着信息被过滤掉的越多,辨别能力受到的损害越大,高通过滤比低通过滤对辨别能力的损害更大。然后将鸽子暴露在混合刺激下,其中高通过滤的狗脸与低通过滤的猫脸相结合,反之亦然。低空间频率内容对混合刺激的响应比对高空间频率内容的影响更大,而在相同空间距离观看相同刺激的人对高空间频率内容的响应更强。这些结果是出乎意料的,因为与人类相比,鸽子的行为往往是由视觉刺激的局部细节控制的,而不是它们的全局外观。
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来源期刊
自引率
23.10%
发文量
0
审稿时长
>12 weeks
期刊介绍: The Journal of Experimental Psychology: Animal Learning and Cognition publishes experimental and theoretical studies concerning all aspects of animal behavior processes.
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