The direct projections from the nucleus tractus solitarius (NTS) and area postrema (AP) to the periaqueductal gray (PAG) were investigated in the rat by using tract-tracing techniques.
BACKGROUND:The nucleus tractus solitarius(NTS) is one of the key relay stations of various visceral primary afferent information.
背景：脑干孤束核是内脏痛信息向高位脑中枢传递的一个关键的中继站。
3
The nucleus tractus solitarius and the rostral ventrolateral medulla are 2 important brainstem nuclei, and they play pivotal roles in autonomic cardiovascular regulation.