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• W1993436360 abstract "The acquisition of a water maze-based allocentric place learning task and an exploration based object recognition task were studied in four groups of rats: animals in which the fimbria-fornix had been transected, rats who had received bilateral ablations of the anteromedial prefrontal cortex, animals in which both of these structures had been lesioned, and a sham operated control group. None of the groups showed impairments of object recognition. Ablations of the prefrontal cortex caused a mild impairment in the acquisition of the place learning task. The two fimbria-fornix transected groups exhibited a severe impairment during the acquisition of this task. All groups reached criterion level task performance eventually. All groups were subjected to a number of behavioural and pharmacological challenges in order to elucidate the neural and cognitive mechanisms of this behavioural recovery. During a no-platform session both the fimbria-fornix transected group and the prefrontally ablated group demonstrated a normal preference for the former platform position. The combined lesion group, however, failed to show a similar preference for this position. The outcome of the pharmacological challenges demonstrated that while the task performance of all four groups relied equally on catecholaminergic mediation, only the task solution of the fimbria-fornix transected group was significantly impaired by disturbance of the catecholaminergic systems. The data indicated a high likelihood that prefrontal cortical mechanisms contribute to the recovery of allocentric place learning after fimbria-fornix transections." @default.
• W1993436360 created "2016-06-24" @default.
• W1993436360 creator A5007760134 @default.
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• W1993436360 creator A5027635886 @default.
• W1993436360 creator A5032485439 @default.
• W1993436360 creator A5075301939 @default.
• W1993436360 date "2004-04-01" @default.
• W1993436360 modified "2023-10-08" @default.
• W1993436360 title "Place learning and object recognition by rats subjected to transection of the fimbria-fornix and/or ablation of the prefrontal cortex" @default.
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• W1993436360 doi "https://doi.org/10.1016/j.brainresbull.2004.02.008" @default.
• W1993436360 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15145141" @default.

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