Table 1.

Data obtained from subjects in group I while they rested quietly but awake with their eyes closed

	Area	x	y	z	OEF	P	CBF	P	CMRO2	P
A	M 31/7	−5	−49	40	1.010	0.62	1.374*	<0.0001	1.397*	<0.0001
B	L 40	−53	−39	42	0.901	0.07	0.735*	<0.0001	0.695*	<0.0001
C	L 39/19	−45	−67	36	0.987	0.66	0.813*	0.0008	0.805*	0.0003
D	R 40	45	−57	34	0.978	0.26	1.002	0.96	0.998	0.97
E	L lateral 8	−27	27	40	0.981	0.52	0.991	0.74	0.986	0.74
F	L 8/9	−11	41	42	0.902	0.04	0.874	0.006	0.803*	0.001
G	R 8/9	5	49	36	0.887	0.004	0.893	0.01	0.813*	0.001
H	L 9	−15	55	26	0.943	0.35	0.813*	0.0001	0.785*	0.002
I	L 10	−19	57	8	0.971	0.06	0.940	0.01	0.927	0.01
J	M 10	−1	47	−4	0.933	0.01	1.284*	<0.0001	1.203*	<0.0001
K	L 10/47	−33	45	−6	0.930	0.25	0.920	0.03	0.879	0.04
L	M 32	3	31	−10	0.946	0.20	1.111	0.005	1.058	0.26
M	L 20	−49	−19	−18	0.972	0.46	0.821*	<0.0001	0.814*	0.0002

The values for OEF, CBF, and CMRO₂ are expressed as local-to-global ratios (see Methods). For the 19 subjects in group I the global values for OEF and CBF (± SD) were 0.40 ± 0.09 (dimensionless) and 46 ± 8 ml/(min × 100 g), respectively. The mean arterial oxygen content for this group was 16.6 ± 0.16 ml/ml. From these data quantitative images of the CMRO₂ were created that yielded a mean cerebral hemisphere value of 2.94 ± 0.41 ml/(min × 100 g) or 1.31 ± 0.18 μmol/(min × g). The asterisks denote values that differ significantly from the global mean after correction for multiple comparisons.