Perceptual learning in object recognition: object specificity and size Invariance
Perceptual learning in object recognition: object specificity and size Invariance
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DOI：
10.1016/s0042-6989(99)00134-0
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发表时间：
2000-01-01
期刊：
影响因子：
1.8
通讯作者：
Engel, SA
中科院分区：
文献类型：
--
作者：
Furmanski, CS;Engel, SA
一系列的四个实验测量了物体识别中知觉学习的转移。受试者观看了常见物体的后掩蔽灰度图像，并练习了多天的物体命名任务。在实验1中，经过5天的训练，识别阈值平均下降了20%以上，但在转移到一组新对象后可靠地增加。这表明学习是针对练习对象的，实验2排除了熟悉特定于实验背景的策略，如刺激歧视，作为改善的来源。实验3和实验4发现，学习通过图像大小的变化进行转移。学习不能仅仅通过一般感知能力的提高来解释，也不能通过对特定实验环境的学习来解释。我们的研究结果表明，大量的学习发生在特定于对象的机制，是不敏感的图像大小。(C)2000爱思唯尔科技有限公司版权所有。
A series of four experiments measured the transfer of perceptual learning in object recognition. Subjects viewed backward-masked, gray-scale images of common objects and practiced an object naming task for multiple days. In Experiment 1, recognition thresholds decreased on average by over 20% over 5 days of training but increased reliably following the transfer to a new set of objects. This suggests that the learning was specific to the practiced objects, Experiment 2 ruled out familiarity with strategies specific to the experimental context, such as stimulus discrimination, as the source of the improvement. Experiments 3 and 4 found that learning transferred across changes in image size. Learning could not be accounted for solely by an improvement in general perceptual abilities, nor by learning of the specific experimental context. Our results indicate that a large amount of learning took place in object-specific mechanisms that are insensitive to image size. (C) 2000 Elsevier Science Ltd. All rights reserved.