Middle cerebral artery cerebrovascular conductance (MCA CVC), posterior cerebral artery (PCA) CVC, common carotid (CCA) CVC, and internal carotid (ICA) CVC in young (n = 10; ●) and old (n = 9, n = 7 for ICA, ) at baseline (BL), during a 3-min cold pressor test (CPT1, CPT2, and CPT3), and followed by a 3-min recovery (RE1, RE2, and RE3). Values are means ± SE. P values represent repeated ANOVA results.