User:Willgiardino/Perioculomotor subgriseal neuronal stream

Perioculomotor subgriseal neuronal stream is a newly-delineated brain area positioned amongst a number of oculomotor nuclei within the midbrain. Specifically, it is located along the midline, within the ventral periaqueductal gray, anterior to the dorsal raphe nucleus.

Neurons within the perioculomotor subgriseal neuronal stream contain neuropeptides such as urocortin, cocaine- and amphetamine-regulated transcript , cholecystokinin , and nesfatin-1. Abbreivated pIIISG, this region has recently been distinguished from the adjacent Edinger-Westphal nucleus, a distinct neuronal population containing choline acetyltransferase which projects to the ciliary ganglion and is involved in lens accomodation and pupil constriction.