Effects of lesions of the associative parietal cortex on the acquisition and use of spatial memory in egocentric and allocentric navigation tasks in the rat
Language English Country United States Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Dark Adaptation physiology MeSH
- Association Learning physiology MeSH
- Maze Learning physiology MeSH
- Dominance, Cerebral physiology MeSH
- Kinesthesis physiology MeSH
- Rats MeSH
- Brain Mapping MeSH
- Orientation physiology MeSH
- Attention physiology MeSH
- Reaction Time physiology MeSH
- Retention, Psychology physiology MeSH
- Mental Recall physiology MeSH
- Parietal Lobe physiology MeSH
- Escape Reaction physiology MeSH
- Animals MeSH
- Check Tag
- Rats MeSH
- Male MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
It has been hypothesized that the rat associative parietal cortex (APC) is involved in the association between visuospatial and locomotion-generated (kinesthetic) information. To study the kinesthetic component, APC-lesioned and control rats were trained in total darkness to reach a submerged platform in the Morris water maze. In the egocentric task, the relative position of the starting point and the platform was constant all over training. Parietal rats have been found impaired in acquisition and to a less extent in retention of this task. In the allocentric task, rats were then trained in the standard version of the navigation task. A mild deficit was observed in acquisition of this task because the APC-lesioned rats displayed longer escape latencies but control-like search patterns. These results suggest that the APC is involved in the coding of kinesthetic information that plays an important role in place navigation.
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Place cells and place navigation
