Figure 7.
Correlation of power difference between retrieval and encoding in the central electrodes, and memory accuracy. This correlation was significant in the elderly, r = 0.405, (A) but not in the young participants, (B). Topoplots of retrieval condition minus encoding for elderly and young subjects, respectively, over peak frequencies (8–25 Hz). The effects are broadly centrally located, whereas the peak for the young subjects is shifted frontally.