Table 2:

Percentage parameter change (mean ± SD) on administration of O2 for the young and elderly groups

Δ = (O2/no O2 − 1) × 100YoungP Value, Δ Young = 0ElderlyP Value, Δ Elderly = 0
T2′ Cortex O21.1 ± 8.8P = .34−2.5 ± 6.6P = .245
T2′ GM frontoparietal O20.0 ± 4.4P = .731.1 ± 5.8P = .522
T2′ Thal O2−1.8 ± 4.0P = .521.5 ± 16.4P = .674
T2′ WM O20.3 ± 3.5P = .68−0.1 ± 4.2P = .784
T2* Cortex O20.4 ± 2.4P = .3−0.8 ± 4.1P = .498
T2* GM frontoparietal O20.7 ± 1.4P = .090.3 ± 3.6P = .452
T2* Thal O20.3 ± 3.3P = .911.4 ± 9.6P = .756
T2* WM O2−0.7 ± 4.3P = .68−0.2 ± 2.5P = .596
T2 Cortex O20.4 ± 1.5P = .384.1 ± 7.6P = .033a
T2 GM frontoparietal O2−8.1 ± 8.2P = .01a8.9 ± 13.8P = .005a
T2 Thal O20.3 ± 10.4P = .57−0.8 ± 6.4P = .812
T2 WM O2−1.9 ± 3.4P = .111.8 ± 3.3P = .04a
PASL_O2−2.4 ± 3.0P = .02a−2.5 ± 16.5P = .539

  • Note:—Thal indicates thalamus; Cortex, frontoparietal paramedian.

  • ↵a Significant.