Table 3.
Brain regions covarying with heart rate during mild LBNP (15 > 5-mmHg) common to both the Main (n = 8) and Repeat (n = 6) groups
| Location (Brodmann area) | Side | MNI (x, y, z) | TAL (x, y, z) | Voxels (no.) | T-score | Z-score |
|---|---|---|---|---|---|---|
| A. Increased activation during higher heart rates | ||||||
| Insula (13) | R | 34, −22, 13 | 34, −21, 13 | 22 | 3.08 | 2.53 |
| Precentral gyrus (6) | R | 40, −12, 34 | 40, −10, 32 | 12 | 2.89 | 2.41 |
| Postcentral gyrus (3) | R | 44, −22, 60 | 44, −19, 56 | 17 | 3.05 | 2.63 |
| Cerebellum | L | −14, −52, −25 | −14, −51, −18 | 23 | 2.87 | 2.39 |
| B. Decreased activation during higher heart rates | ||||||
| Anterior cingulate (32) | R | 18, 46, 12 | 18, 45, 9 | 54 | 3.05 | 2.69 |
| Amygdala | L | −22, 0, −26 | −22, −1, −22 | 14 | 2.86 | 2.39 |
| Thalamus (medial dorsal nucleus) | L | −12, −20, 12 | −12, −19, 12 | 12 | 3.00 | 2.80 |
MNI, Montreal Neurological Institute co-ordinates; TAL, Talaraich co-ordinates; L, left; R, right.