User:Jtwsaddress42/Quotes/Porges, Stephen 1995a

'''In Mammals... There Are Two Vagal Motor Systems''' "'There are two vagal motor systems. One vagal system is the vegetative vagus, which originates in the dorsal motor nucleus [DMNX] and is associated with passive reflexive regulation of visceral functions. The other vagal system is the smart vagus, which originates in [the Nucleus Ambiguus] NA and is associated with the active processes of attention, motion, emotion, and communication. These two systems are neuroanatomically distinct, have different ontogenetic and phylogenetic origins, and employ different adaptive strategies.'

Stephen Porges (1995)"