Figure 3.

Factors affecting the magnitude of navigation task-specific Arc mRNA expression in the hippocampus: anatomical subdivision, its dorsal or ventral location, and a time delay since memory acquisition. A, Learning-specific Arc mRNA expression in hippocampal anatomical regions after recent and remote water-maze memory tests. B, An interaction plot illustrates time-dependent and subdivision-specific changes in Arc mRNA expression that were most distinct in CA3 compared with DG, CA1, and subiculum. Error bars indicate SEM of WMT and SW Arc mRNA differences. Sub, Subiculum; SW/N, SW/naive.