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Recognition memory performance on an object recognition memory task (left panel) and an object-in-location recognition memory task (right panel) at different age ranges. The results are shown as mean Discrimination Index (DI) across WT (n = 8) and AD (n = 8) rats. Error bars show ± SEM. The dashed line indicates chance performance. AD rats showed impaired object-in-location memory performance relative to WT rats by 9–12 months of age.
