Li P, Tjen A Looi S, Longhurst J. Excitatory projections from arcuate nucleus to ventrolateral periaqueductal gray in electroacupuncture inhibition of cardiovascular reflexes. Am J Physiol Heart Circ Physiol. 2006;290:H2535-42 pubmed
..These results suggest that excitatory projections from the ARC to the vlPAG are essential to the EA inhibition of the reflex increase in BP induced by SN or gallbladder visceral afferent stimulation. ..
Li P, Tjen A Looi S, Guo Z, Fu L, Longhurst J. Long-loop pathways in cardiovascular electroacupuncture responses. J Appl Physiol (1985). 2009;106:620-30 pubmed publisher
..Direct projections from the ARC to the rVLM, which serve as an important source of beta-endorphin, appear also to exist. ..
Li P, Tjen A Looi S, Longhurst J. Nucleus raphe pallidus participates in midbrain-medullary cardiovascular sympathoinhibition during electroacupuncture. Am J Physiol Regul Integr Comp Physiol. 2010;299:R1369-76 pubmed publisher
..These results indicate that EA activates the vlPAG, which excites the NRP to, in turn, inhibit rVLM presympathetic neurons and reflex cardiovascular sympathoexcitatory responses. ..