Discrimination learning induced by training with identical stimuli
Discrimination learning induced by training with identical stimuli
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DOI：
10.1038/nn1787
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发表时间：
2006-11-01
影响因子：
25
通讯作者：
Moore, David R.
中科院分区：
文献类型：
--
作者：
Amitay, Sygal;Irwin, Amy;Moore, David R.
通过练习，感觉刺激变得更容易检测或区分。人们普遍认为，由于在既不太容易也不太困难的水平上专注地执行任务，与任务相关的刺激维度变得越来越显着。然而，在这里，我们展示了在使用物理上相同的音调进行训练后，听觉频率辨别能力得到了改善，而这些音调是不可能辨别的。我们还表明，学习可以跨音调频率和跨模式转移：无声视觉空间计算机游戏的训练提高了听觉辨别任务的阈值。我们认为，最佳感知学习需要三个过程：通过刺激的敏感化、特定形态和维度的注意力以及一般唤醒。
Sensory stimuli become easier to detect or distinguish with practice. It is generally assumed that the task-relevant stimulus dimension becomes increasingly more salient as a result of attentively performing the task at a level that is neither too easy nor too difficult. However, here we show improved auditory frequency discrimination following training with physically identical tones that were impossible to discriminate. We also show that learning transfers across tone frequencies and across modalities: training on a silent visuospatial computer game improved thresholds on the auditory discrimination task. We suggest that three processes are necessary for optimal perceptual learning: sensitization through exposure to the stimulus, modality- and dimension-specific attention, and general arousal.