Table 2.

Retrograde labeling

	PRV injections in the Ce						PRV injections in the elPB
	PRV 47 PRV ipsi/contra	Case 40 PRV ipsi/contra	Case 93 PRV ipsi/ contra	Case 71 PRV ipsi/ contra	Case 71 FG ispi/ contra	Case 67 FG ipsi/ contra	Case 103 PRV ipsi/ contra	Case 51 PRV ipsi/ contra	Case 51 CTB ipsi/ contra
PONS
Parabrachial subnuclei
Central lateral	0 /0	+ /−	+ /+	+ /+	+ /+	+ /+
Dorsal lateral	0 /0	0 /0	0 /0	0 /0	0 /0	+ /+
External lateral	+ /+	++ /+	++ /+	+++ /+++	+++ /++	+++ /++
External medial	++ /+	+ /+	+ /+	+ /+	++ /+	+ /+
Internal lateral (il)	0 /0	0 /0	0 /0	+ /+	0 /0	0 /0
Kölliker-Fuse (kf)	0 /0	0 /0	0 /0	0 /0	0 /0	0 /0
Lateral crescent area (lc)	0 /0	0 /0	0 /0	0 /0	0 /0	+ /0
Medial (m)	0 /0	+ /+	+ /+	+ /+	+++ /+	+ /0
Superior lateral (sl)	0 /0	0 /0	0 /0	0 /0	0 /0	0 /0
Ventral lateral (vl)	0 /0	+ /+	+ /+	+ /+	+++ /+	++ /+
Waist (w)	0 /0	+ /0	+ /0	+ /+	+++ /+	++ /+
CAUDAL MEDULLA
A1 region	0 /0	++ /+	+ /+	++ /++	++ /+	+ /+	++ /++	++ /++	++ /++
N. Solitary tract	+ /0	++ /+	+ /−	++ /++	++ /0	+ /0	+++ /++	+++ /++	+++ /++
Trigeminal subnucleus  caudalis (Sp Vc)
Lamina I	0 /0	+ /+	+ /+	++ /++	0 /0	0 /0	+++ /++	+++ /+++	++ /+++
Lamina II	0 /0	0 /0	0 /0	++ /++	0 /0	0 /0	++ /+	+++ /+++	+ /+
Lamina III–IV	0 /0	0 /0	0 /0	0 /0	0 /0	0 /0	0 /0	+ /+	+ /+
Lamina V	0 /0	0 /0	+ /0	+ /0	0 /0	0 /0	0 /0	++ /+	++ /++
Paratrigeminal nucleus	0 /0	0 /0	+ /+	++ /++	0 /0	0 /0
SPINAL CORD
Cervical
Lamina I	0 /0	0 /0	+ /−	++ /++	0 /0	0 /0	++ /+	++ /+++	+ /+++
Lamina II	0 /0	0 /0	0 /0	+ /+	0 /0	0 /0	+ /0	++ /+++	0 /0
Lateral spinal nucleus	0 /0	0 /0	0 /0	+ /+	+ /+	0 /0	+ /+	++ /++	++ /++
Reticular formation  of neck	0 /0	0 /0	0 /0	rare /rare	+ /+	0 /0	+ /+	+ /+	++ /++