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双训练的长期运动知觉学习的有限迁移

Liang J, Zhou Y, Fahle M

期刊名称:J VISION 视觉杂志

卷期:第15卷(2015年)10期

关键词:

摘要

     最近视觉知觉学习研究的一项重要发展是双重训练技术。有了这种技术,肖,张,王,Klein,Levi,和余(2008年)已经发现了先前已证明的特定刺激的完全转移。这一发现的意义是,这种技术已经在所有的任务测试,包括运动方向辨别中获得了成功。在这里,我们考察了采用恒定的刺激方法是否可以将这种技术推广到知觉的长期学习中。我们的任务是学习辨别随机点的运动方向。训练的第二阶段是沿着同一个移动点新的平均方向的反向辨别。我们发现,虽然移动点沿着新方向的曝光促进了运动方向的辨别力,这种部分迁移离完全迁移还远远不够。我们的结论是,尽管在一定条件下知觉学习是可以迁移的,但刺激的特异性仍然是运动知觉学习的内在特性。

    A significant recent development in visual perceptual learning research is the double training technique. With this technique, Xiao, Zhang, Wang, Klein, Levi, and Yu (2008) have found complete transfer in tasks that had previously been shown to be stimulus specific. The significance of this finding is that this technique has since been successful in all tasks tested, including motion direction discrimination. Here, we investigated whether or not this technique could generalize to longer-term learning, using the method of constant stimuli. Our task was learning to discriminate motion directions of random dots. The second leg of training was contrast discrimination along a new average direction of the same moving dots. We found that, although exposure of moving dots along a new direction facilitated motion direction discrimination, this partial transfer was far from complete. We conclude that, although perceptual learning is transferrable under certain conditions, stimulus specificity also remains an inherent characteristic of motion perceptual learning.

 
 

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