Table 1.
Identified brainstem nuclei.
| Side | t-value | MNI: x (mm) | MNI: y (mm) | MNI: z (mm) | Brainstem nuclei |
|---|---|---|---|---|---|
| r | 7.21 | 5 | -38 | -60 | Inferior olive (IO) |
| l | 7.11 | -8 | -38 | -46 | Rostral ventrolateral medulla (rVLM) |
| Lateral reticular nucleus (LRt) | |||||
| Lateral paragigantocellular nucleus (LPGi) | |||||
| l/r | 6.62 | 2 | -43 | -51 | Hypoglossal nucleus (12N) |
| 6.45 | 1 | -45 | -57 | Raphe obscurus nucleus (ROb) | |
| l | 6.29 | -3 | -43 | -56 | Intermediate reticular nucleus (IRt) |
| l | 5.97 | -1 | -45 | -54 | Dorsal motor nucleus of the vagal nerve (DMN) |
| Nucleus tractus solitarii(NTS) | |||||
| r | 5.67 | 7 | -34 | -45 | Rostral ventrolateral medulla (rVLM) |
| r | 5.67 | 2 | -40 | -44 | Dorsal paragigantocellular nucleus (DPGi) |
| r | 5.61 | 7 | -42 | -56 | Spinal trigeminal nucleus (SP5) |
| r | 5.6 | 6 | -40 | -48 | Nucleus ambiguus (NA) |
| l | 4.98 | -7 | -44 | -56 | Spinal trigeminal nucleus (SP5) |
| r | 4.59 | 6 | -38 | -55 | Caudal ventrolateral medulla (cVLM) |
| l | 4.72 | -5 | -46 | -53 | Spinal vestibular nucleus (SpVe) |
| l | 4.43 | -6 | -35 | -55 | Inferior olive (IO) |
| r | 4.4 | 6 | -45 | -50 | Medial vestibular nucleus |
| l | 4.05 | -5 | -42 | -48 | Nucleus tractus solitarii (NTS) |
All brainstem nuclei encompassed in the cluster were identified using a brainstem atlas. Active regions after p < 0.0005 threshold are reported in MNI standard space coordinates with the corresponding t-values for the local maxima. (Larger t-values indicate better correlation between fMRI signal and systolic blood pressure. The t-value is defined as the parameter estimate from the GLM divided by the error of the parameter estimate.) Cluster size: 1437 (mm3), center of gravity x: 1.46, y: -40, z: -51.6. MNI: Montreal Neurological Institute.