Date of Award

2013

Publication Type

Master Thesis

Degree Name

M.Sc.

Department

Biological Sciences

Keywords

Biological sciences, Psychology, Foraging, Nonspatial cues, Rats, Spatial cues, Workingmemory

Supervisor

Jerome Cohen

Rights

info:eu-repo/semantics/openAccess

Abstract

Animals use various spatial and non-spatial cues when navigating the environment. They can use spatial cues such as a landmark's local position, global position and orientation, or they can use a landmark's non-spatial featural information. The objectives of this thesis were: 1) to determine the conditions under which rats process information separately or simultaneously; 2) to determine how rats process stimuli when previously fixed information becomes more variable; 3) to determine whether animals can use spatial information when a previously encoded non-spatial cue is occasionally eliminated. The results obtained from this research suggest that rats use two different types of processing as a function of variability of redundant information. Moreover, changes within trials were only disruptive for animals that encountered information that had not varied between trials. However, with continued exposure to within-trial changes, these animals' accuracy increased to levels comparable to animals presented with information that varied between trials.

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