Table 1.
Analysis of the reflection period
| Brodmann area | Mean X | Mean Y | Mean Z | Cluster size (mm 3 ) | t-max | |
|---|---|---|---|---|---|---|
| a) Contrast (refl-self > refl-known) & (refl-self > refl-unknown) | ||||||
| Sup. frontal gyrus/DMPFC R, ACC/MCC |
6/8/24/32 |
5 |
11 |
37 |
7132 |
4.7 |
| Insula/inferior frontal gyrus R |
13/45/47 |
36 |
23 |
2 |
3674 |
5.1 |
| Insula/inferior frontal gyrus L |
13/45/47 |
-36 |
21 |
6 |
7877 |
4.7 |
| Middle frontal gyrus/DLPFC R |
9 |
35 |
29 |
35 |
387 |
3.9 |
| Middle frontal gyrus/DLPFC R |
9/10 |
29 |
39 |
24 |
271 |
4.0 |
| Middle insular cortex R |
13 |
40 |
3 |
2 |
524 |
3.5 |
| Midbrain |
- |
2 |
-23 |
0 |
1361 |
3.8 |
| Posterior cingulate cortex |
23/24 |
2 |
-16 |
33 |
1281 |
4.4 |
| Caudate nucleus |
- |
-17 |
-6 |
23 |
283 |
3.6 |
| Subcallosal cingulate cortex L |
13 |
-17 |
11 |
-10 |
719 |
3.9 |
| b) Contrast (refl-self > refl-known) & (refl-self > refl-unknown) & (refl-self > perc-self) | ||||||
| Insula/inferior frontal gyrus L (Figure 1A) |
13/44 |
-38 |
15 |
8 |
2495 |
3.9 |
| Sup. frontal gyrus/DMPFC R (Figure 1B, 2A) |
6 |
9 |
1 |
53 |
1964 |
4.1 |
| Middle frontal gyrus/DLPFC R (Figure 1 C) |
9/10 |
29 |
39 |
24 |
386 |
4.0 |
| Posterior cingulate cortex (Figure 1D) | 23/24 | 2 | -19 | 34 | 636 | 4.2 |
Activity during self-reflection significantly larger (random effects analysis, p > 0.005, p < 0.01 Monte Carlo simulation corrected) than in the known and the unknown reflection conditions.
Activation as in a) but also larger in the refl-self than in the perc-self condition.
Abbreviations: R right, L left. DLPFC dorsolateral prefrontal cortex, DMPFC dorsomedial prefrontal cortex, sup superior.