Figure 12.

Normalized path overlap and ensemble similarity between epochs 1 and 2. Scatter plots of the Z-score-normalized similarity score as a function of Z-score-normalized path overlap in adult (black) and old (gray) rats for the AA (A, B) and the AB (C, D) conditions in distal and proximal CA1. There was a significant correlation between the similarity score of the active ensembles during epochs 1 and 2 and path overlap in proximal CA1 for the AA condition only (C; r₍₁₀₎ = 0.75, p < 0.005). None of the other variables showed any significant correlation with path overlap (p > 0.4 for all comparisons).