Umetani T, Tabuchi T, Ichimura R
Brain Behav Evol. 1986;29(1-2):54-67. doi: 10.1159/000118671.
The topographic organization of cerebellar cortical efferent fibers from the posterior lobe of the albino rat was studied by silver impregnation methods. The corticonuclear fibers from the vermis of the posterior lobe project to the caudomedial and middle parts of the medial cerebellar nucleus (MN) with medio-lateral localization; fibers from the medial portion of the vermis project to the caudomedial part of the MN (MNcm) and those from the lateral portion project to the middle part of the MN (MNm). Corticovestibular fibers originate in the caudal vermis lateral to the area projecting to the MNcm and MNm, and terminate in the dorsal part of the lateral vestibular nucleus (LVN). The origins of corticonuclear fibers to the dorsolateral protuberance of the MN (MNdlp), the posterior interpositus nucleus (PIN) and the anterior interpositus nucleus (AIN) are located latero-medially in the intermediate cortex. Fibers from the area adjacent to the vermis and rostral to the prepyramidal fissure project to the MNdlp, while those from the area lateral to the origin of the corticovestibular fibers and caudal to the fissure project to the medial AIN. Together, these areas comprise a medial portion of the intermediate cortex. Corticonuclear fibers to the PIN and lateral AIN originate from the lateral portion of the intermediate cortex. The corticonuclear fibers to the dorsolateral hump and lateral nucleus originate from the medial and lateral portions of the lateral cortex, respectively.
采用银浸染法研究了白化大鼠后叶小脑皮质传出纤维的局部定位组织。后叶蚓部的皮质核纤维以内外侧定位投射到内侧小脑核（MN）的尾内侧和中部；蚓部内侧部分的纤维投射到MN的尾内侧部（MNcm），外侧部分的纤维投射到MN的中部（MNm）。皮质前庭纤维起源于投射到MNcm和MNm区域外侧的尾侧蚓部，并终止于外侧前庭核（LVN）的背侧部。投射到MN背外侧隆起（MNdlp）、后间位核（PIN）和前间位核（AIN）的皮质核纤维起源于中间皮质的外侧到内侧。来自蚓部附近且位于锥体前裂前方区域的纤维投射到MNdlp，而来自皮质前庭纤维起源外侧且位于该裂后方区域的纤维投射到AIN内侧。这些区域共同构成中间皮质的内侧部分。投射到PIN和外侧AIN的皮质核纤维起源于中间皮质的外侧部分。投射到背外侧隆起和外侧核的皮质核纤维分别起源于外侧皮质的内侧和外侧部分。
