Fig. 2.

Comparison of oscillatory components of the power spectra between the top and bottom LFP channels and the two disease groups. (A) Spectra for the bottom (NBM) channel. (B) Spectra for the top (GPi region) channel. The shaded area shows standard error of the mean. (C) Comparison of top and bottom channels in the PDD group. (D) Comparison of top and bottom channels in the DLB group. The line with error bars shows the mean difference and its 95% confidence interval (paired comparison). The PDD patients appear to have increased beta power in the top, but not the bottom channel. There is also increased low frequency power in the bottom channel seen in both groups but more consistently in the PDD group.