Figure 4.

Aβ-related differences in MTL activation for repetition suppression. Repetition suppression activity was compared across the YA, Aβ– OA, and Aβ+ OA groups with ANOVAs and follow-up pairwise comparisons. While significant differences were found between the YA group and each Aβ group, there were no additional significant difference between Aβ– and Aβ+ OA, indicating no effect of Aβ positivity on repetition suppression activity (ps > 0.05). Significance above each bar reflects one sample t tests within each group, while lines across bars represent significant group differences with independent samples t tests. Error bars represent SEM; ***p < 0.001, **p < 0.01, *p < 0.05.