TABLE 5.
Brain activation corresponding to the main effect of condition in n-back tasks (whole-brain condition effects, all p < 0.05 [familywise error rate (FWE)-corrected]; only the maximum peak in grey matter is reported for each cluster).
Region | Number of active voxels in the cluster (k) | Side | MNI |
t-value | ||
x | y | z | ||||
2-back > 1-back | ||||||
Inferior frontal gyrus (pars triangularis) | 7685 | L | −38 | 16 | 30 | 6.74 |
Superior parietal lobule | 6073 | L | −26 | −66 | 54 | 6.61 |
Middle frontal gyrus | 1012 | R | 38 | 38 | 40 | 4.76 |
Cerebellum (VI) | 834 | R | 12 | −72 | −26 | 5.81 |
Middle frontal gyrus | 265 | L | −28 | 48 | 20 | 5.00 |
Insular lobe | 257 | R | 32 | 26 | 0 | 4.97 |
2-back > 0-back | ||||||
Middle frontal gyrus | 21401 | L | −26 | 2 | 56 | 9.87 |
Superior parietal lobule | 12119 | L | −28 | −62 | 44 | 10.35 |
Cerebellum (VI) | 6349 | R | 10 | −78 | −22 | 9.34 |
Thalamus | 944 | R | 12 | −2 | 2 | 4.90 |
Middle temporal gyrus | 257 | R | 46 | −54 | 12 | 3.98 |
2-back > baseline | ||||||
Posterior medial frontal | 32824 | R | 4 | 24 | 48 | 11.15 |
Inferior parietal lobule | 27229 | L | −42 | −44 | 48 | 9.81 |
1-back > 0-back | ||||||
Superior parietal lobule | 19251 | R | 32 | −68 | 50 | 8.04 |
Inferior frontal gyrus (pars triangularis) | 11731 | R | 50 | 28 | 24 | 8.31 |
Inferior frontal gyrus (pars triangularis) | 5831 | L | −44 | 34 | 26 | 7.08 |
Thalamus | 1176 | R | 20 | −20 | 12 | 5.26 |
Middle cingulate cortex | 465 | L | −2 | −28 | 30 | 5.16 |
Caudate nucleus | 269 | L | −10 | −2 | 16 | 4.42 |
1-back > baseline | ||||||
Posterior medial frontal | 78791 | R | 6 | 8 | 56 | 10.56 |
0-back > baseline | ||||||
Posterior medial frontal | 36244 | L | −4 | 0 | 50 | 9.49 |
Cerebellum (VI) | 418 | L | −38 | −52 | −28 | 5.64 |
1-back > 2-back | ||||||
Middle cingulate cortex | 1285 | L | −12 | −28 | 50 | 5.01 |
Rolandic operculum | 1193 | L | −40 | −18 | 18 | 6.04 |
Insular lobe | 898 | R | 38 | −14 | 8 | 4.59 |
Superior medial gyrus | 889 | L | −10 | 58 | 24 | 5.02 |
Postcentral gyrus | 267 | L | −34 | −26 | 48 | 3.73 |
0-back > 2-back | ||||||
Superior medial gyrus | 940 | L | −10 | 58 | 26 | 5.39 |
Rolandic operculum | 501 | R | 40 | −20 | 22 | 4.25 |
Rolandic operculum | 356 | L | −40 | −14 | 16 | 4.47 |
baseline > 2-back | ||||||
Precuneus | 407 | L | −6 | −52 | 20 | 4.54 |
Superior medial gyrus | 292 | L | −2 | 60 | 2 | 4.07 |
L: left; MNI: Montreal Neurological Institute; R: right.