So there's kind of dopaminergic neurons that come from the periaqueductal gray, serotonergic ones from the dorsal raphae nuclei, histomenergic neurons that come from the tuber-mammillary nucleus of the hypothalamus, and所以有來自導水管周圍灰質的多巴胺能神經元,來自背縫核的血清素能神經元,來自下視丘結節乳頭體核的組胺能神經元,以及