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(A): The effect of parasympathetic central autonomic network (CAN) functional connectivity (FC) on glial fibrillary acidic protein in picograms per milliliter (GFAP pg/ml) conditional upon APOE4 status is compared in 40 APOE4 carriers and 54 non-carriers. (B): Scatterplot showing the relationship between resting state parasympathetic CAN FC and GFAP pg/ml in 40 APOE4 carriers is shown and within group p-values are provided with and without demographic covariate adjustment
