What Do You Know About The Mesencephalofugal Modulating System?

The grey stuff that environs the essential (Sylvain) channel in the epencephalon contains a thick inhabitant of small neurons whose axons go down into the medulla oblongata, wherein they finish on the cells of some of the gray stuff that are fixed in the medulla close to its midline and just deep to its ventral surface.

The axons of those gray stuffs then go down into the spinal cord in the dorsolateral, from which they pass into the spinal grey stuff. But having done so, they do not finish on apical spinal interneuron's  but in its place appear (at least, as some current evidence suggests) to synapse with the nociceptive relay neurons in the basal spinal nuclei - upon which neurons they exert a post-synaptic inhibitory result as a effect of their discharge maybe of transmitter 5-ydroxytryptamine.

Many investigational studies have by now shown that electrical or chemical stimulation of neurons in the periaqueductal grey stuff results in shyness of the transmission of nociceptive afferent action through the relay nucleus in the spinal grey stuff; and more freshly, some claims have been made that stereo tactic electrical inspiration of the periaqueductal region in patients may produce relief of pain.