Table 2.

Correlations between regional PET uptake and sleep EEG variables of interest^a

	Correlation with coupling strength (r)	Correlation with proportion 0.6–1 Hz SWA (r)
PiB DVR ROI
mPFC	−0.161	−0.372*
dlPFC	−0.144	−0.431*
Parietal	−0.131	−0.360*
Temporal	−0.157	−0.377*
FTP SUVR ROI
Entorhinal cortex	−0.338	0.081
Braak I/II regions	−0.454*	0.056
Braak III/IV regions	−0.362*	−0.066
Braak V/VI regions	−0.401*	−0.136
Meta ROI	−0.327	−0.048
Global	−0.404*	−0.110
Parahippocampal cortex	−0.492*	−0.040
Orbitofrontal cortex	−0.532*	−0.315
Precuneus	−0.443*	−0.026
Inferior parietal cortex	−0.290	−0.110
Inferior temporal cortex	−0.298	−0.080

^aRows represent each ROI. Columns represent Pearson's correlations between EEG metric and PET uptake (see Materials and Methods). PiB DVR ROIs are comprised of weighted PiB DVR means within FreeSurfer regions, as described by Mander et al. (2015). FTP SUVR ROIs are comprised of weighted FTP SUVR means within FreeSurfer regions after PVC, as described by Maass et al. (2017).

*Significant r value (p < 0.05).