title: The effects of dorsal versus ventral hippocampal, total hippocampal, and parietal cortex lesions on memory for allocentric distance in rats.
abstract: To test for the contribution of the parietal cortex and hippocampus to memory for allocentric spatial cues, the authors trained rats on a go/no-go task that required the rat to remember the distance between two visual cues. Total hippocampal lesions impaired working-memory representation for allocentric distance, whereas parietal cortex lesions resulted in only a transient impairment. In a second experiment, neither hippocampal nor parietal cortex lesions impaired allocentric distance discrimination. A third experiment showed that both the dorsal and ventral areas of the hippocampal formation must be destroyed to impair working memory for allocentric distance information. There appears to be a dissociation between the hippocampus and parietal cortex in mediating memory for allocentric distance information.
authors.affiliation: Department of Psychology, University of Utah, Salt Lake City 84112, USA.
authors.forename: J M
authors.initials: JM
authors.lastname: Long
authors.forename: R P
authors.initials: RP
authors.lastname: Kesner
mesh_terms: D000818:Animals; D001288:Attention / Q000502:physiology; D001931:Brain Mapping; D004193:Discrimination Learning / Q000502:physiology; D004215:Distance Perception / Q000502:physiology*; D006624:Hippocampus / Q000502:physiology*; D008297:Male; D011939:Mental Recall / Q000502:physiology*; D009434:Neural Pathways / Q000502:physiology; D009949:Orientation / Q000502:physiology*; D010296:Parietal Lobe / Q000502:physiology*; D011340:Problem Solving / Q000502:physiology; D051381:Rats