Creem S H, Wraga M, Proffitt D R
University of Virginia, Charlottesville, USA.
Cognition. 2001 Aug;81(1):41-64. doi: 10.1016/s0010-0277(01)00118-4.
Previous studies found that it is easier for observers to spatially update displays during imagined self-rotation versus array rotation. The present study examined whether either the physics of gravity or the geometric relationship between the viewer and array guided this self-rotation advantage. Experiments 1-3 preserved a real or imagined orthogonal relationship between the viewer and the array, requiring a rotation in the observer's transverse plane. Despite imagined self-rotations that defied gravity, a viewer advantage remained. Without this orthogonal relationship (Experiment 4), the viewer advantage was lost. We suggest that efficient transformation of the egocentric reference frame relies on the representation of body-environment relations that allow rotation around the observer's principal axis. This efficiency persists across different and conflicting physical and imagined postures.
先前的研究发现，与阵列旋转相比，观察者在想象自我旋转时更容易在空间上更新显示。本研究探讨了重力物理学或观察者与阵列之间的几何关系是否引导了这种自我旋转优势。实验1-3保持了观察者与阵列之间真实或想象的正交关系，要求在观察者的横向平面内进行旋转。尽管想象中的自我旋转违背了重力，但观察者优势依然存在。没有这种正交关系（实验4），观察者优势就消失了。我们认为，以自我为中心的参考系的有效转换依赖于身体与环境关系的表征，这种关系允许围绕观察者的主轴进行旋转。这种效率在不同且相互冲突的物理和想象姿势中都持续存在。
