杏仁复合体的传入性联系——HRP法对大白鼠杏仁中央核和内侧核的研究

AFFERENT CONNECTIONS OF THE AMYGDALOID COMPLEX——STUDIES WITH RETROGRADE AXONAL TRANSPORT METHOD OF HRP IN THE CENTRAL AND MEDIAL NUCLEI OF AMYGDALA IN THE RAT

应用辣根过氧化物酶的微量注射和微电泳方法从三个不同入路对大白鼠的杏仁内侧核和杏仁中央核作传入性联系研究。观察表明:终纹床核、下丘脑腹内侧核和中脑黑质密带主要投射到杏仁内侧核。而前梨状区、杏仁周围区、嗅区皮质、尾壳核及苍白球、隔外侧核、伏隔核、下丘脑外侧区、丘脑室周核、带旁核、束旁核、中央中核、内侧膝状体、脑干黑质网带、中缝背核、臂旁核和蓝斑主要投射到杏仁中央核。延髓孤束核内始终未见到标记。上述部位的标记,在下丘脑腹内侧核、臂旁核和蓝斑核其标记为双侧性。其余均为同侧性。

The afferent connections to the nucleus amygdaloideus centralis and nucleusamygdaloideus medialis in 42 albino rats were examined by means of retrogradetransport method of horseradish peroxidase(HRP).The microinjection syringe needle or microelectrophoretic pipette was insertedstereotaxically from vertical or oblipue approaches.The injections of HRP weregiven in the central and medial nuclei of the amygdaloid complex.The results were as follows:Following the injections of HRP into the nucleus amygdaloideus centralis,label-ed cells were always found in prepiriform cortex,periamygdaloid cortex,entorhinalcortex,ventral part the caudoputamen and globus pallidus,nucleus lateralis hy-pothalami,nucleus parafascicularis,corporis geniculati medialis,nucleus raphe dosalis,nucleus parabrachialis,locus coeruleus and zona reticulate substantia nigra.While HRP was injected into the nucleus amygdaloideus medialis,the labeledcells were always found in bed nucleus of stria terminalis,nucleus ventromedialis(hypothalami)and substantia nigra pars compacta.As the injections were given from lateral oblique approaches,labeled cells werenot found in the neo-cortex.There were no labeled cells demonstrated in the nuc-leus solitarius.In the above-mentioned areas nucleus ventromedialis(hypothalami),nucleusparabrachialis and locus coeruleus were often labeled bilaterally while others,ipsila-terally.