Table 2.
Clusters of significant CBF changes during the 2-back task compared to the resting baselinea
| Type | Size (voxels) | Anatomical label | BA | Talairach coordinates |
Z score | Δ CBF ± SD (ml/100 g/min) | % CBF change ± SD | ||
|---|---|---|---|---|---|---|---|---|---|
| x | y | z | |||||||
| Activation | 194 | L. inferior parietal lobule | 40 | -50 | -33 | 40 | 3.70 | 8.3 ± 6.1 | 15.7 (±13.0) |
| L. inferior parietal lobule | 40 | -33 | -50 | 41 | 3.00 | ||||
| 186 | L. inferior frontal gyrus | 9 | -50 | 4 | 30 | 3.84 | 7.7 ± 5.0 | 14.1 (±11.6) | |
| L. precentral gyrus | 6 | -39 | 22 | 27 | 2.84 | ||||
| 141 | L. medial frontal gyrus | 6 | -6 | 17 | 43 | 3.86 | 7.3 ± 4.2 | 11.5 (±6.6) | |
| R. cingulate gyrus | 32 | 9 | 14 | 38 | 3.60 | ||||
| L. medial frontal gyrus | 6 | -3 | 3 | 55 | 3.28 | ||||
| 120 | L. middle occipital gyrus | 37 | -48 | -64 | -7 | 3.27 | 11.1 ± 13.8b | 26.0 (±39.3)b | |
| Deactivation | 432 | L. medial frontal gyrus | 6 | -6 | -20 | 56 | 4.07 | -5.6 ± 2.6 | -12.1 (±6.3) |
| R. cingulate gyrus | 24 | 12 | -13 | 39 | 3.94 | ||||
| R. paracentral lobule | 6 | 9 | -24 | 51 | 3.74 | ||||
| 399 | R. insular | 13 | 36 | -5 | 20 | 3.65 | -5.6 ± 2.7 | -11.5 (±6.1) | |
| R. insular | 13 | 39 | -22 | 29 | 3.54 | ||||
| R. superior temporal gyrus | 22 | 62 | 3 | -5 | 3.25 | ||||
| 392 | L. superior temporal gyrus | 22 | -53 | -12 | 1 | 3.91 | -6.9 ± 3.4 | -10.2 (±3.9) | |
| L. insular | 13 | -45 | -20 | 15 | 3.63 | ||||
| L. middle temporal gyrus | 21 | -50 | -1 | -18 | 3.37 | ||||
| 61 | R. superior frontal gyrus | 10 | 15 | 62 | 22 | 3.45 | -6.5 ± 4.2 | -13.5 (±10.3) | |
a
The details of this table are the same as those for Table 1.
b
Based on n = 11. One subject’s resting CBF value for this region showed extreme value due to artifacts and was excluded.