地标与环境几何线索之间的增强和遮蔽效应。
Potentiation and overshadowing between landmarks and environmental geometric cues.
作者信息
Horne Murray R, Pearce John M
机构信息
School of Psychology, Cardiff University, Wales, UK.
出版信息
Learn Behav. 2011 Dec;39(4):371-82. doi: 10.3758/s13420-011-0032-8.
Rats were required in three experiments to find one of two submerged platforms that were situated in the same pair of diagonally opposite corners of a rectangular grey swimming pool. The experimental groups were trained with landmarks, comprising A4 cards attached to the walls, located in the corners containing the platforms. For the control groups, the landmarks were situated in the corners containing the platforms for half of the trials, and in the other corners for the remaining trials. Learning about the positions of the platforms with reference to the shape of the pool was overshadowed in the experimental groups when the landmarks were white, and enhanced when the landmarks were black. A fourth experiment assessed whether geometric cues influenced the control acquired by the landmarks. As in the previous experiments, the presence of the geometric cues overshadowed learning about the landmarks when they were white, but enhanced learning when the landmarks were black.
在三项实验中，要求大鼠在一个长方形灰色游泳池的对角的两个角落中找到两个水下平台中的一个。实验组在放置平台的角落使用地标进行训练，地标由贴在墙上的A4卡片组成。对于对照组，在一半的试验中，地标位于放置平台的角落，而在其余试验中，地标位于其他角落。当地标为白色时，实验组中大鼠根据泳池形状学习平台位置的能力被掩盖；当地标为黑色时，这种能力则得到增强。第四个实验评估了几何线索是否会影响地标所获得的控制作用。与之前的实验一样，当几何线索存在时，白色地标会掩盖大鼠对地标位置的学习，但黑色地标则会增强这种学习。
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