GABAergic神经元在BARREL和VPM区组织结构及形态特点的研究

啮齿类以胡须为感觉器官，通过其摆动获取物体质地和空间位置信息。在老鼠的每一侧嘴部，有5列水平排布的机械感受器，位于胡须下面的囊泡中。胡须摆动可打开机械型离子通道，产生动作电位，经传出纤维传入位于脑干的三叉神经节中，从而使三叉核团的谷氨酸型突触产生兴奋。三叉丘脑核团在三叉核团处形成躯体代表区，称为“barrelettes”。接着脑干中的这些神经元又将信息传入丘脑的Ventral poslerior medial（VPM）核团，

The Morphology and Structure of GABAergic Neurons in BARREL and VPM

To understand the structure of GABAergic neurons in the VMP and"barrel",the distribution of GABAergic neurons in the two areas were studied through immunohistochemistry and Lair Scanning Confoeal Microscope.The results show that the distribution of GABAergic neurons in VMP and barrel are different,and the coding of information transmission in the two areas are also dissimilar;GABAergie neurons mainly distribute among the lines asymmetrically in VMP,the somata,dendrite and axon of GABAergie neurons are restricted in the"barrel",rarely having synaptie connections with other "barrel"around.Therefore,VMP and barrel may have different roles in transmission and on processing of informatiton.