Figure 6.

Across patient correlation of power and memory performance. A, For each patient with electrodes in the L MTL, we calculated (1) power in the HFA band (identical to Fig. 6) 2000–250 ms before word presentation and (2) the percentage of correctly recalled items across all sessions. The correlation between these two variables was statistically reliable (r = 0.3911, p = 0.0015). B, We repeated the analysis in A for all ROIs in Figure 5 for power during correct retrievals in the memory retrieval interval (2000–250 ms before vocalization), in the vocalization interval (250–2000 ms after vocalization), as well as for baseline power. HFA power in the L MTL trended toward significance for all three conditions (*p < 0.05), but was only significant after correcting for multiple comparisons during memory retrieval (** FDR corrected, q = 0.05). L, Left; R, right; Motor, motor region.