FIGURE 3 | (A) Electrodes in cortical regions exhibiting across-subject differences between successful memory encoding (SME) for the − 0.5- to 1.5-s time bins. The color intensity indicates the direction of the effect (yellow = low gamma, red = high gamma) with a significance threshold of p < 0.05. Blue denotes regions that did not exhibit a significant effect among subjects. (B) Time course of significant oscillatory activity in SMEs for lateral temporal cortices from four individuals (Subject 1 to Subject 4, left to right, respectively). Each panel shows the t -transformed significance value of the difference in power between remembered and forgotten memories. The left and right temporal cortices both exhibit heightened low-gamma power (30–60 Hz) and high-gamma oscillation ( ∼ 150 Hz) increases during pre- and during-stimulus intervals in SME. The dashed white line indicates p < 0.05 significance