PERCEPTUAL-LEARNING SPECIFIC FOR ORIENTATION AND SPATIAL-FREQUENCY
PERCEPTUAL-LEARNING SPECIFIC FOR ORIENTATION AND SPATIAL-FREQUENCY
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DOI：
10.1038/287043a0
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发表时间：
1980-01-01
期刊：
影响因子：
64.8
通讯作者：
BERARDI, N
中科院分区：
文献类型：
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作者：
FIORENTINI, A;BERARDI, N
已经报道了几个“感知学习”（通过练习提高某些感知任务）的例子1 - 4。这些研究对神经学研究很有兴趣，因为它们证明了神经系统的可塑性。即使是对于基本的感知任务，如视觉敏锐度或游标敏锐度1,4，练习也能促进神经变化，从而提高表现。这个领域的一个问题是，这种学习是在哪里发生的？关于学习过程可能的神经部位的指示可以从它对某些特定刺激参数的特异性中得出。例如，有一种暗示，全局立体视觉的学习可能发生在视觉信息被对不同刺激方向选择性敏感的机制处理的阶段。本文报道了一种基于感知学习的不同波形光栅识别实验。我们的研究结果表明，学习对练习刺激的方向和空间频率都是特定的。
Several examples of ‘perceptual learning’ (improvement of some perceptual task with practice) have been reported1–4. These studies are of great interest (for neurological research because they demonstrate plasticity of the nervous system. Even for apparently basic perceptual tasks, such as visual acuity or vernier acuity1,4, practice can facilitate a neural change which enhances performance. One question in this field is where does this learning occur? Indications about the possible neural site of a learning process may be derived from its specificity for some particular stimulus parameters. For instance, there is a hint that learning in global stereopsis may occur at a stage where visual information is processed by mechanisms selectively sensitive to different stimulus orientations3. We report here an experiment on perceptual learning in the discrimination of gratings of different waveform. Our findings show that learning is specific for both the orientation and the spatial frequency of the practice stimulus.