Table 2.

Correlations between regional PET uptake and sleep EEG variables of interesta

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−0.3380.081
    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).