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- W1991642388 abstract "Once established, the behavior of hippocampally ablated animals is extremely resistant to modification. This may be described as perseveration, a tendency to repeat what has just been done, or as a lack of variability, a tendency to do just one thing. Intact, neocortically ablated, and hippocampally ablated animals were run in a four-choice situation. Hippocampal ablates show distributions of choices that depart more from one in which all four choices are equiprobable than do those of controls. Thus they may be described as lacking in variability. The probilities of occurrence for each of the choices are used to predict sequential aspects of the behavior under an assumption of trial to trial independence, random combination. Perseveration and alternation are defined in terms of the direction of the deviation of the observed behavior from this prediction. For most hippocampally ablated animals the predictions are accurate. A few may perseverate and a few may alternate. Control animals alternate. At most, hippocampally ablates may be described as failing to alternate. An explanation in terms of memory processes is advanced." @default.
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- W1991642388 title "Lack of variability or perseveration: Describing the effect of hippocampal ablation" @default.
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- W1991642388 doi "https://doi.org/10.1016/0031-9384(70)90035-1" @default.
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