Maternal age differences in cognitive regulation: examination of associations and interactions between RSA and EEG frontoparietal alpha power coherence

Figures

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  FIGURE 1. Age (x-axis) association with executive function (EF) composite z-score (y-axis). This scatterplot includes the linear and quadratic functions representing the association between maternal age and EF task performance, indicating a negative parabolic function with the apex of performance occurring in the mid-30 s with a decrease that continues through the older half of the sample.

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  FIGURE 2. Aim 1 simple slopes. Shown are the simple slopes reflecting the statistical prediction of frontoparietal coherence (F4-P4/F4-P8) from RSA as a function of maternal age. Slopes are shown at one standard deviation below mean age (solid line, *p < 0.05), at mean age (dashed line, non-significant slope), and one standard deviation above mean age (dotted line, non-significant slope).

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  FIGURE 3. Aim 2 simple slopes, for older half of sample. Shown are the simple slopes for the older half of the sample, reflecting the statistical prediction of executive function from frontoparietal coherence (F4-P4/F4-P8) as a function of respiratory sinus arrhythmia (RSA). Slopes are shown at one standard deviation above mean RSA (solid line, *p < 0.05), at mean RSA (dashed line, non-significant slope), and one standard deviation below mean RSA (dotted line, non-significant slope). In contrast, none of the simple slopes was significantly different from 0 among the younger half of the sample.