main stations in the a-b-c ( allocortex-brainstem-core ) periventricular axis include the substantia gelatinosa , nucleus ( n. ) tractus solitarii-dorsal vagal nucleus-area postrema complex , locus ceruleus , n. parabrachialis , central gray and associated raphe nuclei , ventral tegmental area , lateral and periventricular hypothalamus , n. paraventricularis , bed nucleus of the stria terminalis , preoptic-septal nuclei and n. centralis amygdalae with associated amygdaloid nuclei , as well as the ventral and dorsal allocortex .
C0006121
brainstem
C0023951
locus ceruleus