Intra and inter‐network connectivity in the olfactory network and default mode network across the Alzheimer's disease spectrum: An analysis of COMPASS‐ND cognitive and imaging data

These findings suggest a coupling of olfaction and memory performance in SCD, that is not present in controls, despite similar sensory and cognitive performance. Moreover, we expect these changes will relate to changes in connectivity within and between the ON and DMN. These data contribute to the potential utility of measuring olfactory performance as a non-invasive and reliable biomarker in SCD and MCI for conversion to later stages of the AD continuum.