Fig. 2.

Neuroimaging correlates of SF. Results of the voxelwise regression analyses between SF parameters and neuroimaging data in cognitively unimpaired elderly participants (left part) and patients with SCD/MCI (right part). Results are presented at P < .001 (uncorrected) and adjusted for age, gender, BMI, and the complementary SF parameter (i.e., SF variability when SF intensity was considered, and conversely). Abbreviations: BMI, body mass index; FDG: ¹⁸F-fluorodeoxyglucose; MCI, mild cognitive impairment; SCD, subjective cognitive decline; SF, sleep fragmentation.