Representing a stable environment by egocentric updating and invariant representations

Representing a stable environment by egocentric updating and invariant representations To represent a stable environment despite the experience of changes during self movements, one can either develop an invariant allocentric representation, or update the egocentric representations as one moves. Using a disorientation paradigm, three sets of studies investigated these mechanisms in human navigation and scene recognition. Accuracy in the configuration of multiple object localization is impaired by disorientation, an effect not due to artifacts such as memory deterioration over time, intervening physical activities, uncertainty in self position and orientation, etc., suggesting one can locate objects primarily by updating their egocentric positions as she or he moves. Disorientation also impaired the judgment of changes to a scene after viewer movements, suggesting a similar egocentric updating process. On the contrary, representation of the shape of the surroundings is invariant and persists through disorientation. The coexistence of multiple mechanisms may increase the flexibility and robustness of the system. Spatial Cognition and Computation Springer Journals

Representing a stable environment by egocentric updating and invariant representations

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Kluwer Academic Publishers
Copyright © 1999 by Kluwer Academic Publishers
Psychology; Cognitive Psychology
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