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. 2012 Feb 29;32(7):1177–1187. doi: 10.1038/jcbfm.2012.18

Table 1. CBF, CMRO2, and OEF values.

Cortical region CBF
CMRO2
OEF
  Mean at age 50 α P value of α Mean at age 50 α P value of α Mean at age 50 α P value of α
F-M1 49 −0.18 <0.001 170 −0.31 0.031 0.41 0.001 0.014
P-S1 49 −0.14 0.006 179 −0.28 0.064 0.43 0.001 0.031
T 45 −0.12 0.007 166 −0.24 0.065 0.44 0.001 0.031
O 51 −0.05 0.336 200 −0.18 0.323 0.46 0.001 0.254
M1S1 46 −0.10 0.018 171 −0.19 0.192 0.43 0.001 0.063

CBF, cerebral blood flow; CMRO2, cerebral metabolic rate of oxygen consumption; F-M1, frontal lobe without primary motor area; M1S1, primary motor and somatosensory area; O, occipital lobe; OEF, oxygen extraction fraction; P-S1, parietal lobe without primary somatosensory area; T, temporal lobe.

Mean parametric values at age 50, CBF (mL/100 g per minute), CMRO2 (μmol/100 g per minute). α is the coefficient for the linear regression of CBF, CMRO2, and OEF with age as independent variable.