Allocentric and egocentric updating of spatial memories

29 Mar

Participants viewed images of an arrangement of objects taken from a single viewpoint and subsequently were tested on their ability to recognize the arrangement from novel viewpoints that had been translated in either the lateral or the depth dimension.

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ABSTRACT: Illusory self-motion (vection) can be generated by visual stimulation.Backward displacement showed no such effect, nor did lateral translation that resulted in a centered “canonical” view of the arrangement.These results further constrain the specificity of spatial memory, while also providing some evidence that nonegocentric spatial information is coded in memory.As an organism navigates through the environment, these internal representations are updated to reflect the changing relationship between the organism and its surroundings (e.g., Müller & Wehner, 1988; Philbeck, Loomis, & Beall, 1997; Rieser, 1989; Waller, Montello, Richardson, & Hegarty, 2002). It provides a rich input that will allow different species to learn a different enduring representation of its environment, each tailored to their own needs for survival.