Spatial updating relies on an egocentric representation of space: Effects of the number of objects |
| |
Authors: | Ranxiao Frances Wang James A Crowell Daniel J Simons David E Irwin Arthur F Kramer Michael S Ambinder Laura E Thomas Jessica L Gosney Brian R Levinthal Brendon B Hsieh |
| |
Institution: | (1) Department of Psychology, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus;(2) Department of Psychology, Vanderbilt University, 111 21st Ave South, Nashville, TN 37203, USA |
| |
Abstract: | Models of spatial updating attempt to explain how representations of spatial relationships between the actor and objects in
the environment change as the actor moves. In allocentric models, object locations are encoded in an external reference frame,
and only the actor’s position and orientation in that reference frame need to be updated. Thus, spatial updating should be
independent of the number of objects in the environment (set size). In egocentric updating models, object locations are encoded
relative to the actor, so the location of each object relative to the actor must be updated as the actor moves. Thus, spatial
updating efficiency should depend on set size. We examined which model better accounts for human spatial updating by having
people reconstruct the locations of varying numbers of virtual objects either from the original study position or from a changed
viewing position. In consistency with the egocentric updating model, object localization following a viewpoint change was
affected by the number of objects in the environment. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|