Roles of egocentric and allocentric spatial representations in locomotion and reorientation
Roles of egocentric and allocentric spatial representations in locomotion and reorientation
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DOI：
10.1037/0278-7393.32.6.1274
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发表时间：
2006-11-01
影响因子：
2.6
通讯作者：
Xiao, Chengli
中科院分区：
文献类型：
--
作者：
Mou, Weimin;McNamara, Timothy P.;Xiao, Chengli
四个实验研究了运动中使用的空间表征的性质。参与者学习了几个物体的布局，然后在蒙眼的情况下在3种情况下指向物体：转弯前（基线），转向新方向后（更新），迷失方向后（迷失方向）。定向障碍条件下指向的内部一致性相对较高，与基线和更新条件下的一致性相当，当布局具有显著的内在轴时，参与者学习了布局外围物体的位置。当参与者站在物体中间学习物体的位置，并且布局没有显著的内在轴时，定向障碍会破坏指向的内部一致性。我们还观察到，许多参与者在迷失方向后从原来的学习标题中检索空间关系。这些结果表明，当人们学习新环境的布局并使用这种表征来定位周围的物体时，他们会形成一种物体与物体空间关系的非中心表征。当非中心表征保真度不高时，自我中心表征可用于定位物体。
Four experiments investigated the nature of spatial representations used in locomotion. Participants learned the layout of several objects and then pointed to the objects while blindfolded in 3 conditions: before turning (baseline), after turning to a new heading (updating), and after disorientation (disorientation). The internal consistency of pointing in the disorientation condition was relatively high and equivalent to that in the baseline and updating conditions, when the layout had salient intrinsic axes and the participants learned the locations of the objects on the periphery of the layout. The internal consistency of pointing was disrupted by disorientation when participants learned the locations of objects while standing amid them and the layout did not have salient intrinsic axes. It was also observed that many participants retrieved spatial relations after disorientation from the original learning heading. These results indicate that people form an allocentric representation of object-to-object spatial relations when they learn the layout of a novel environment and use that representation to locate objects around them. Egocentric representations may be used to locate objects when allocentric representations are not of high fidelity.