Examining the wave × aperiodic exponent × individual peak α frequency interaction through the slope of the change in cognitive function over waves for each BTACT measure at high and low levels of each EEG metric
| Change in BTACT episodic memory factor from M2 to M3 | |||
| Slope of IAPF | 95% CI | p-value | |
| Low exponent (−1 SD) | 0.01 | −0.18 to 0.20 | 0.903 |
| High exponent (+1 SD) | 0.12 | −0.05 to 0.30 | 0.173 |
| Slope of exponent | 95% CI | p-value | |
| Low IAPF (−1 SD) | −0.11 | −0.67 to 0.45 | 0.709 |
| High IAPF (+1 SD) | 0.29 | −0.47 to 1.05 | 0.457 |
| Change in BTACT executive functioning factor from M2 to M3 | |||
| Slope of IAPF | 95% CI | p-value | |
| Low exponent (−1 SD) | −0.04 | −0.15 to 0.07 | 0.482 |
| High exponent (+1 SD) | 0.15 | 0.05 to 0.25 | 0.004 |
| Slope of exponent | 95% CI | p-value | |
| Low IAPF (−1 SD) | −0.42 | −0.75 to −0.09 | 0.013 |
| High IAPF (+1 SD) | 0.25 | −0.17 to 0.67 | 0.244 |
| Change in BTACT overall composite from M2 to M3 | |||
| Slope of IAPF | 95% CI | p-value | |
| Low exponent (−1 SD) | −0.04 | −0.14 to 0.07 | 0.502 |
| High exponent (+1 SD) | 0.15 | 0.05 to 0.25 | 0.002 |
| Slope of exponent | 95% CI | p-value | |
| Low IAPF (−1 SD) | −0.36 | −0.67 to −0.04 | 0.025 |
| High IAPF (+1 SD) | 0.30 | −0.11 to 0.70 | 0.149 |
Bold values are significant at p < .05.