Table 3.

A comparison between neuronal tracing studies of the nerves supplying the lateral auricle (the ABVN, the greater auricular nerve and the auriculotemporal nerve) and the cervical vagal trunk.

Study	Reference	Location of injection	Tracer	Species	NTS							Vagal	Trigeminal			Cervical			AP	Cu
					L	D	Comm	M	D	I	V	DVN	Pa5	SP5n	SP5	C1	C2	C3
Non‐isolated ABVN	(Chien et al. 1996)	Middle and caudal auricle	Horseradish peroxidase	Dogs	+				+				+	+	+	+	+	+		+
	(He et al. 2013)	Auricular concha	Cholera toxin B	Rats	+									+			+	+		+
Isolated ABVN	(Nomura & Mizuno, 1984)	ABVN	Horseradish peroxidase	Cats		+	+		+			+		+	+	+	+	+		+
Vagal nerve	(Kalia & Sullivan, 1982)	Cervical vagal trunk	Horseradish peroxidase	Rats	+	+	+	+	+	+	+	+				+	+		+
	(Nomura & Mizuno, 1983)	Cervical vagal trunk	Horseradish peroxidase	Cats	+	+	+	+	+	+	+	+				+	+
Isolated greater auricular nerve	(Liu & Hu, 1988)	Greater auricular nerve root	Horseradish peroxidase	Rabbit						+				+	+	+	+	+		+
Isolated auriculotemporal nerve	(Takemura et al. 1987)	Auriculotemporal nerve branch	Horseradish peroxidase	Rats									+	+	+	+	+	+		+

Permissions: We wish to thank Professor Jim Deuchars (University of Leeds) and Dr Mohd Kaisan Bin Mahadi for providing this table. No formal permissions required.

L, Lateral; DL, dorsolateral; Comm, commissural; M, medial; D, dorsal; I, intermediate; V, ventral; DVN, dorsal vagal nucleus; Pa5, paratrigeminal nucleus; SP5n, spinal trigeminal nucleus; SP5, spinal trigeminal tract; AP, area postrema; Cu, cuneate nucleus.