Table 1.
Significant active voxels in the amygdala
| Condition | 5–100% amygdala mask |
50–100% amygdala mask |
|||||
|---|---|---|---|---|---|---|---|
| Left | Right | Z max | Left | Right | Z max | ||
| Building | Fear | 201 (24.2) | 248 (26.1) | 4.92 | 84 (37) | 130 (46.8) | 4.89 |
| Anger | 150 (18.1) | 240 (25.3) | 5.23 | 82 (36.1) | 129 (46.4) | 5.25 | |
| Disgust | 89 (10.7) | 199 (20.9) | 4.98 | 33 (14.5) | 121 (43.5) | 4.75 | |
| Happy | 106 (12.8) | 182 (19.2) | 4.98 | 55 (24.2) | 106 (38.1) | 4.85 | |
| Sad | 21 (2.5) | 18 (1.9) | 3.42 | 10 (4.4) | 12 (4.3) | 3.31 | |
| 25% happy | Fear | 122 (14.7) | 115 (12.1) | 4.08 | 45 (19.8) | 63 (22.7) | 4.08 |
| Anger | 37 (4.5) | 111 (11.7) | 3.39 | 32 (14.1) | 56 (20.1) | 3.16 | |
| Disgust | 36 (4.3) | 83 (8.7) | 3.44 | 12 (5.3) | 56 (20.1) | 3.44 | |
| Happy | 35 (4.2) | 63 (6.6) | 3.70 | 21 (9.2) | 35 (12.6) | 3.20 | |
| Sad | 0 | 0 | 0 | 0 | |||
| Neutral | Fear | 46 (5.5) | 38 (4) | 3.15 | 22 (9.7) | 18 (6.5) | 3.15 |
| Anger | 9 (1.1) | 71 (7.5) | 3.66 | 7 (3.1) | 24 (8.6) | 3.41 | |
| Disgust | 0 | 25 (2.6) | 3.29 | 0 | 13 (4.7) | 3.29 | |
| Happy | 0 | 5 (0.5) | 2.92 | 0 | 0 | ||
| Sad | 0 | 0 | 0 | 0 | |||
Numbers of active voxels passing the threshold of Z > 2.6 (P < 0.005) and peak Z-values in the left and right amygdala for each expression vs each control condition. Data in the left columns refer to the 5–100% amygdala masks from the Harvard-Oxford atlas, which comprised a total of 830 voxels in the left amygdala and 950 voxels in the right amygdala. Data in the right columns refer to the 50–100% amygdala masks from the Harvard-Oxford atlas, which comprised a total of 227 voxels in the left amygdala and 278 voxels in the right amygdala. Numbers in brackets refer to active voxels in percentage with respect to total voxels in each mask.