Fig. 4
From: Evaluations of dementia by EEG frequency analysis and psychological examination
Relationships between the variation score and HDS-R. The variation scores of the five frequency bands of interests obtained from normal controls (n = 10) and dementia patients (n = 16) are plotted against HDS-Rs, and linear fittings performed. Note that there are correlations between variation scores and HDS-R in the theta (R = −0.77, P < 0.0001), alpha2 (R = 0.88, P < 0.0001) and beta frequency bands (R = −0.56, P = 0.0027), when the level of significance is 0.01