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本实验用HRP方法研究了大鼠间脑向中脑导水管周围灰质前部的投射。间脑向中脑导水管周围灰质前部的投射主要来自同侧的内侧视前区、丘脑下部前区、背内侧核、腹内侧核、背侧乳头体前核、丘脑下部外侧部、Forel氏区和未定带,对侧较少。其中丘脑下部前区、腹内侧核、背侧乳头体前核和未定带向同侧中脑导水管周围灰质外侧核的投射明显地多于向内侧核和对侧外侧核的投射。丘脑下部前区向中脑导水管周围灰质投射的神经元多位于该区的腹外侧部,即外前核范围内。外侧视前区和丘脑下部外侧部前份向中脑导水管周围灰质外侧核和内侧核均有投射,而丘脑下部外侧部的结节份和乳头体份可能只投射到外侧核。
In this experiment, the projection of the anterior segment of the gray matter around the midbrain aqueduct in rats was studied using the HRP method. The projection of the midbrain to the anterior segment of the gray matter around the midbrain ducts mainly comes from the ipsilateral medial preoptic area, the anterior hypothalamic area, the dorsal medial nucleus, the ventral medial nucleus, the dorsal papillary body anterior nucleus, the lateral hypothalamus, Forel’s Zone and undetermined, contralateral less. In which the anterior hypothalamic area, ventral medial nucleus, dorsal papillary body nucleus and unidentified to the ipsilateral midbrain pericycle lateral projection of the gray matter of the lateral nucleus was significantly more than the medial and contralateral lateral nucleus projection. Neurons projecting from the anterior hypothalamus to the gray matter around the midbrain aqueduct are mostly located in the lateral ventricle of the region, ie, outside the prefrontal nucleus. The anterior and lateral hypothalamus of the anterior and lateral parts of the anterior hypothalamus are both projected to the lateral and medial nucleus of the gray matter of the midbrain aqueduct, while the nodules and papillary components of the lateral part of the hypothalamus may project only to the lateral nucleus.