Article Figures & Data
Figures
- Figure 1.
Schematic representation of the scalp sites used to record and analyze electrical brain activity. Activity was recorded from all 32 sites that are shown. The statistical analyses were based on the 24 black sites to allow partitioning of sites into four quadrants defined by anterior–posterior and left–right location.
- Figure 2.
Anticipatory brain activity predicting later memory performance. a–c, Depicted are group-averaged ERP waveforms (collapsed across men and women) at a frontal electrode site (site 21 from montage 10; www.easycap.de/easycap/e/electrodes/13_M10.htm) elicited by cues preceding pleasant pictures (a), unpleasant pictures (b), and neutral pictures (c). Anticipatory activity related to successful encoding is evident for unpleasant cues. For graphical purposes, the waveforms were low-pass filtered at 19.4 Hz.
- Figure 3.
Anticipatory brain activity elicited by cues preceding unpleasant pictures separated according to the biological sex of the individual. a, c, In women (a), but not men (c), anticipatory activity is predictive of later memory performance. Waveforms are shown for the same frontal scalp site as used in Figure 2. For graphical purposes, the waveforms were low-pass filtered at 19.4 Hz. b, Voltage spline map illustrating that the effect in women is largest over right hemisphere scalp sites. The map shows the difference between activity preceding later remembered and forgotten pictures in the 300–1500 ms interval following cue onset.
- Figure 4.
Brain activity following picture onset. a–c, Group-averaged ERP waveforms (collapsed across men and women) are shown for pleasant pictures (a), unpleasant pictures (b), and neutral pictures (c) that were later remembered or forgotten. The frontal electrode site used in Figures 2 and 3 is shown again here (site 21 from montage 10; www.easycap.de/easycap/e/electrodes/13_M10.htm). A positive-going, frontally distributed subsequent memory effect is elicited by all picture types. Waveforms were low-pass filtered at 19.4 Hz for display purposes.
Tables
Recognition type Picture type Pleasant Unpleasant Neutral Hits, remember 0.42 (0.16) 0.45 (0.17) 0.40 (0.18) Hits, know 0.31 (0.15) 0.27 (0.13) 0.29 (0.14) Misses 0.27 (0.11) 0.28 (0.13) 0.31 (0.12) Correct rejections 0.75 (0.13) 0.81 (0.11) 0.84 (0.10) Standard deviations are displayed in parentheses.
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