Specificity of fast perceptual learning in shape localisation tasks based on detection versus form discrimination

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• 作者：Antje Kraft ; Cathleen Grimsen ; Dennis Trenner ; Stefanie Kehrer ; Anika Lipfert ; Martin Kö ; hnlein ; Manfred Fahle ; Stephan A. Br ; t
• 关键词：Luminance ; Color ; Motion ; Texture ; Figure-ground segmentation ; Threshold
• 刊名：Vision Research
• 出版年：2010
• 出版时间：22 February 2010
• 年：2010
• 卷：50
• 期：4
• 页码：473-478
• 全文大小：676 K

文摘

Perceptual learning is defined as a long-lasting improvement of perception as a result of experience. Here we examined the role of task on fast perceptual learning for shape localisation either in simple detection or based on form discrimination in different visual submodalities, using identical stimulus position and stimulus types for both tasks. Thresholds for each submodality were identified by four-alternative-forced-choice tasks. Fast perceptual learning occurred for shape detection-based on luminance, motion and color differences but not for texture differences. In contradistinction, fast perceptual learning was not evident in shape localisation based on discrimination. Thresholds of all submodalities were stable across days. Fast perceptual learning seems to differ not only between different visual submodalities, but also across different tasks within the same visual submodality.