Table 3.
Quantitative EEG analyses on the prospective memory night in relation to chronological age and prospective memory consolidation
| Correlation with chronological age | Encoding-adjusted correlation with prospective memory | Age and encoding adjusted correlation with prospective memory | |
|---|---|---|---|
| SWA (mean for all electrodes, epochs) µV2/Hz | r(74) = −.60, p < .001 | r(74) = .18, p = .11 | r p(73) = .04, p = .73 |
| SO (mean for all electrodes, epochs) µV2/Hz | r(74) = −.44, p < .001 | r(74) = .10, p = .39 | r p(73) = −.01, p = .91 |
| Frontal SWA in NREM µV2/Hz | r(74) = −.61, p < .001 | r(74) = .26, p = .03 | r p(73) = .13, p = .26 |
| Frontal SO in NREM µV2/Hz | r(74) = −.55, p < .001 | r(74) = .19, p = .11 | r p(73) = .06, p = .61 |
| Frontal SWA in SWS µV2/Hz | r(73) = −.66, p < .001 | r(73) = .23, p = .05 | r p(72) = .09, p = .46 |
| Frontal SO in SWS µV2/Hz | r(73) = −.68, p < .001 | r(73) = .22, p = .06 | r p(72) = .07, p = .55 |
| Frontal spindle density in N2 | r(74) = −.45, p < .001 | r(73) = .15, p = .21 | r p(73) = .04, p = .74 |
| Frontal spindle density in N3 | r(72) = −.05, p = .66 | r(72) = −.01, p = .92 | r p(71) = −.03, p = .83 |
Analyses included delta slow wave activity (SWA, 1–4 Hz), slow oscillations (SO, 0.5–1.0 Hz), and spindle density. Frontal channels included Fp1, Fp2, F3, Fz, and F4. Prospective memory consolidation was operationalized as the standardized residual score of morning prospective memory performance after adjusting for previous night encoding practice block performance.