Analysis of the role of associative inhibition in perceptual learning by means of the same-different task.
Analysis of the role of associative inhibition in perceptual learning by means of the same-different task.
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通过同异任务分析联想抑制在知觉学习中的作用。
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
G. Hall
中科院分区：
文献类型：
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作者：
C. Mitchell;Raja Kadib;S. Nash;Y. Lavis;G. Hall
在实验1a中，参与者在一系列试验中暴露于2个类似的棋盘刺激AX和BX（其中X代表共同的背景）的单独呈现。在一组中，AX和BX在交替试验中呈现（混合），在另一组中，它们在单独的试验区组中呈现（区组）。在同异测验中，混合组比封闭组表现出更高的标准。在受试者内设计（实验1b）中，以及当测试需要区分预暴露刺激和背景（例如，AX vs. X），即使背景在预暴露和测试（AY vs. Y）之间发生变化（实验2）。在实验3中，当在预暴露中，刺激呈现与单独的背景交替时（例如，AX/X）。这表明，知觉学习效果不是唯一的功能之间的抑制协会的后果，但增加这些功能的显着性。实验4证实了这一发现，也排除了一个帐户的影响，在审判间隔。
In Experiment 1a, participants were exposed, over a series of trials, to separate presentations of 2 similar checkerboard stimuli, AX and BX (where X represents a common background). In one group, AX and BX were presented on alternating trials (intermixed), in another, they were presented in separate blocks of trials (blocked). The intermixed group performed to a higher standard than the blocked group on a same-different test. A superiority of intermixed over blocked exposure was also evident in a within-subject design (Experiment 1b) and when the test required discrimination between a preexposed stimulus and the background (e.g., AX vs. X), even if the background changed between preexposure and test (AY vs. Y) (Experiment 2). In Experiment 3, the intermixed/blocked effect was observed when, in preexposure, stimulus presentations were alternated with the background alone (e.g., AX/X). This suggests that the perceptual learning effect is not the consequence of inhibitory associations between unique features but to increased salience of those features. Experiment 4 confirmed this finding and also ruled out an account of the effect in terms of trial spacing.