Allocentric and egocentric updating of spatial memories Alternative phone chat lines

Posted by / 29-Apr-2015 04:30

Females out-performed males except when the array was consistent with self-motion but not visual snapshots.

These results enable a simple egocentric model of spatial memory to be extended to address large-scale navigation, including the effects of allocentric knowledge, landmark stability and gender.

Subjects in a darkroom saw an array of five phosphorescent objects on a circular table and, after a short delay, indicated which object had been moved.

During the delay the subject, the table or a phosphorescent landmark external to the array was moved (a rotation about the centre of the table) either alone or together.

Representative models from each category are described and compared in a number of dimensions along which simulation models can differ (level of modeling, types of representation, structural accuracy, generality and abstraction, environment complexity), including their possible mapping to the underlying neural substrate.

Neural mappings are rarely explicated in the context of behaviorally validated models, but they could be useful to cognitive modeling research by providing a new approach for investigating a model’s plausibility.

Finally, suggested experimental neuroscience methods are described for verifying the biological plausibility of computational cognitive models of spatial memory, and open questions for the field of spatial memory modeling are outlined.

Allocentric encoding was maximized by using a survey perspective and an object-to-object pointing task.

There are multiple relevant reviews concerning the psychology of spatial cognition (Allen, 2003 and Tommasi and Laeng, 2012) as well as its underlying neuroscience (Avraamides and Kelly, 2008, Burgess, 2008, Moser et al., 2008 and Tommasi et al., 2012).

Although some of these reviews also mention the occasional computational model, no systematic review of computational models of spatial memory has been published in the last decade (note that published a review of models of geographical space).

Several data sources converge to suggest that the hippocampus is not always involved or indeed necessary for allocentric processing.

Hippocampal involvement in spatial coding could reflect the integration of new information generated by “online” self-related changes.

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The influence of representation (iii) is a novel finding which implies that allocentric representations play a role in spatial memory, even over short distances and times.