FIG. 2.

Schematic representation of the main areas in the central nervous system areas possibly influenced by external ear stimulation via vagal and trigeminal nerves. VPM, ventral posterior medial nucleus; ILN, intralaminar nuclei; En, endopiriform nucleus; BNST, bed nucleus stria terminalis; PAG, periacquductal gray matter; PBN, nucleus parabrachialis; RN, raphe nucleus; LC, locus coeruleus; NST, nucleus of the solitarii tract; ABVN, auricular branch of the vagus nerve; ATN, auricular temporal branch of the trigeminal nerve.