Correlations of frontal resting-state EEG markers with MMSE scores in patients with Alzheimer’s disease

Table 4 Correlations between MMSE scores and markers recorded from Fz

Fz	Delta Median	Theta Median	Alpha Median	Theta/Alpha power ratio	Delta Relative power	Theta Relative power	Alpha Relative power	Beta Relative power
MMSE overall score	− 0.439 7.388	− 0.568 1.260	− 0.199 55.905	− 0.599 1.460	− 0.357 17.048	− 0.614 0.561	0.313 25.099	0.785 0.006*
Orientation to time	− 0.426 8.594	− 0.582 1.001	− 0.372 14.883	− 0.393 24.218	− 0.253 39.417	− 0.508 3.097	0.081 102.893	0.759 0.015*
Orientation to place	− 0.411 10.030	− 0.464 5.504	− 0.153 72.828	− 0.470 10.176	− 0.381 13.684	− 0.452 6.345	0.237 43.999	0.673 0.159
Attention and Calculation	− 0.411 10.098	− 0.529 2.294	− 0.132 80.928	− 0.632 0.778	− 0.358 16.934	− 0.619 0.507	0.384 13.118	0.739 0.027*
Recall	− 0.344 19.295	− 0.513 2.887	− 0.191 58.924	− 0.567 2.544	− 0.238 43.703	− 0.596 0.778	0.234 44.818	0.699 0.085

Bold number means positive correlation. First line of each cell represents the Pearson correlation coefficient, and second line represents corrected p-value by multiplying by 280