文章基本信息

标题：Evidence for Arousal-Biased Competition in Perceptual Learning
本地全文：下载
作者：Lee, Tae-Ho ; Itti, Laurent ; Mather, Mara 等
期刊名称：Frontiers in Psychology
电子版ISSN：1664-1078
出版年度：2012
卷号：3
页码：1-9
DOI：10.3389/fpsyg.2012.00241
出版社：Frontiers Media
摘要：Arousal-biased competition theory predicts that arousal biases competition in favor of perceptually salient stimuli and against non-salient stimuli (Mather & Sutherland, 2011). The current study tested this hypothesis by having observers complete many trials in a visual search task in which the target either always was salient (a 55° tilted line among 50° distractors) or non-salient (a 55° tilted line among 80° distractors). Each participant completed one session in an emotional condition, in which visual search trials were preceded by negative arousing images, and one session in a non-emotional condition, in which the arousing images were replaced with neutral images (with session order counterbalanced). Test trials in which the target line had to be selected from among a set of lines with different tilts revealed that the emotional condition enhanced identification of the salient target line tilt but impaired identification of the non-salient target line tilt. Thus, arousal enhanced perceptual learning of salient stimuli but impaired perceptual learning of non-salient stimuli.
关键词：bottom-up salience; emotional arousal; optimal gain bias; pop-out search; threat; visual search