Fig. 3From: Associations between locus coeruleus integrity and nocturnal awakenings in the context of Alzheimer’s disease plasma biomarkers: a 7T MRI studyInteractive effect of middle-to-caudal LC structural integrity and plasma total tau levels. The association between subjective reports of nocturnal awakenings and middle-to-caudal LC structural integrity is represented by tertiles of plasma total tau levels. Simple regression lines are used for a visual display and do not substitute the GLMM outputs. Dotted lines represent 95% confidence intervals of these simple regressionsBack to article page