认知期望对偏差干扰和偏差后干扰的影响
首发时间:2012-12-21
摘要:采用听觉通道Oddball范式考察认知期望高低对偏差干扰和偏差后干扰的影响。实验通过改变靶出现概率操作认知期望水平,结果发现高期望水平整体反应显著性快于低期望水平;在高标准高偏差和高标准低偏差条件下偏差干扰效应均显著,而偏差后干扰效应消失;低标准低偏差条件下偏差干扰和偏差后干扰均消失;低标准高偏差条件下偏差干扰消失而出现易化作用,而偏差后干扰显著存在。研究认为干扰现象受认知期望的影响。
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The Influence of Cognitive Expectation on Deviant Distraction and Post-Deviant Distraction in Pure Auditory Task
Abstract:The deviant and post-deviant distractions are observed in experiment in order to investigate the influence of cognitive expectation in pure auditory Oddball task. Deviant distraction is observed deviant distraction in HSHD and HSLD; post-deviant distraction is disappearance; deviant sounds can actually facilitate performance in LSHD, but post-deviant distraction increased; no such distraction is observed for deviant or post- deviant sounds in LSLD. The results suggest that there could be two sources of influence power. Distraction is the sum of the costs of attentional orienting and the benefits of unspecific activation (novel sounds). Behavioral distraction also result from the violation of the cognitive system's expectation based on the learning of conditional probabilities and, to some extent, the occurrence of a perceptual change from one sound to another.
Keywords: Deviant Distraction Post-Deviant Distraction Pure Auditory Modality Cognitive Expectation
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