Kraft Antje, Grimsen Cathleen, Trenner Dennis, Kehrer Stefanie, Lipfert Anika, Köhnlein Martin, Fahle Manfred, Brandt Stephan A
Department of Neurology, Universitätsmedizin Charité, Berlin, Germany.
Vision Res. 2010 Feb 22;50(4):473-8. doi: 10.1016/j.visres.2009.12.011. Epub 2010 Jan 4.
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.
知觉学习被定义为因经验而导致的知觉的长期改善。在这里，我们使用相同的刺激位置和刺激类型，研究了任务在不同视觉子模态中对形状定位的快速知觉学习的作用，无论是在简单检测中还是基于形状辨别。通过四选一强制选择任务确定每个子模态的阈值。基于亮度、运动和颜色差异的形状检测出现了快速知觉学习，但基于纹理差异的形状检测没有出现。相反，基于辨别的形状定位中快速知觉学习并不明显。所有子模态的阈值在不同天数内保持稳定。快速知觉学习似乎不仅在不同的视觉子模态之间存在差异，而且在同一视觉子模态内的不同任务之间也存在差异。
