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P0338 - Spatial cognition of near and far space in rats: The role of posterior parietal cortex

Published online by Cambridge University Press:  16 April 2020

J. Svoboda
Affiliation:
Department of Neurophysioloy of Memory and Computational Neuroscience, Institute of Physiology of The Academy of Sciences, Prague, Czech Republic
P. Telensky
Affiliation:
Department of Neurophysioloy of Memory and Computational Neuroscience, Institute of Physiology of The Academy of Sciences, Prague, Czech Republic Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
A. Stuchlik
Affiliation:
Department of Neurophysioloy of Memory and Computational Neuroscience, Institute of Physiology of The Academy of Sciences, Prague, Czech Republic

Abstract

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Similarly to human data, posterior parietal cortex (PPC) in the rat has been suggested to transform spatial information from egocentric into allocentric (body-independent) reference frames. In addition, PPC bilateral ablation was found to affect processing of proximal cues more then of distal cues. To further address this issue, we used a place avoidance paradigm which allows to evaluate utilization of near space (intramaze) and far space (extramaze) cues. Experiments took place on a slowly rotating (1 rpm) circular arena, allowing to define the to-be-avoided sector with respect to intramaze cues (i.e., near space condition) or with respect to extramaze cues (i.e., within extramaze reference frame; far space condition). We found that rats with bilateral PPC lesion have no difficulty in acquiring either near space or far space condition. Moreover, if the experimental design was set up to show which reference frame animals prefer, PPC lesioned rats displayed preference for intramaze reference frame more frequently than control rats. Therefore, our results do not support the idea that PPC is preferentially involved in near space processing, in fact our data suggest its role in far space processing. This work was supported by GACR grants 309/06/1231, 309/07/0341 and 206/05/H012 and by MSMT projects 1M0517 and LC554.

Type
Poster Session III: Miscellaneous
Copyright
Copyright © European Psychiatric Association 2008
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