大鼠杏仁复合体向前脑基底部下丘脑和脑干传出投射研究

THE EFFERENT FIBER PROJECTION ON AMYGDALOID COMPLEX WITH THE BASAL FOREBRAIN HYPOTHALAMUS AND BRAINSTEM IN THE RAT.

用35只大鼠以放射自显影法研究了杏仁复合体对前脑基底部和下丘脑的传出联系。杏仁外侧核、杏仁基底外侧核的投射纤维组成终纹的腹侧部,其连合后纤维投射到终纹床核外侧区,其连合前纤维投射到伏隔核、无名质、腹侧壳核、嗅结节和黑质外侧区。杏仁内侧核,杏仁后皮质核的投射纤维组成终纹的背侧部,连合后纤维投射到床核内侧区,连合前纤维投射于下丘脑腹内侧核壳部.乳头体前腹核、伏隔核、无名质,腹侧壳核和外侧隔核。杏仁中央核的投射纤维经过终纹的腹背侧连合后纤维终于终纹床核内侧区和外侧区。连合前纤维投射于下丘脑腹内侧核壳部、乳头体前腹核和下丘脑外侧医。杏仁复合体各亚核都发现有经前连合的纤维,越边终于对侧终纹床核或加入对侧终纹。

The efferent fiber connections of the nuclei of the amygdaloid com-plex with the basal forebrain hypothalamus and brainstem were studied in therats,using the autoradioigraphie method for tracing axonal connections.The eff-erent fibers of the lateral and basalateraI amygdaloid nuclei passed through theventral part of the stria terminalis and projected to lateral division of the bednucleus of the stria terminalis (BNST),the nuclei accumbens,substantia inno-minata,ventral putamen,olfactory tubercle and lateral part of the substantianigra.The efferent fibers of the medial nucleus and the posterior cortical nucl-passed through the dorsal part of the stria terminalis and projected to themedial division of the BNST.The “shell” of the ventromedial hypothalamicnucleus(VMH) as well as the premammiliary nucleus,They also projected tothe nuclei aceumbens and ventrai of the lateral septal nucleus,but very lightlyto the ventral striatum.The projecting fibers of the central nucleus pass throughventral and dorsal parts of the stria terminalis and project to the lateral andmedial division of the BNST,“shell” of the VMH.premammillary nucleus andthe LHA,The lateral part of the substantia nigra,and the marginal nucleus ofthe brachium conjunction.