Barragán E, Ferreyra-Moyano H
Instituto de Investigación Médica, Mercedes y Martin Ferreyra, Cordoba, Argentina.
Neurosci Lett. 1988 Nov 11;93(2-3):214-9. doi: 10.1016/0304-3940(88)90084-5.
Field potential and single unit recordings were used to assess the connections of the olfactory tubercle (OT) with the main olfactory bulb (MOB) and the piriform cortex (PC) in urethane-anesthetized rats. Current generators of depth profiles evoked in OT following MOB stimulation were localized 300 microns superficial to those elicited by PC shocks, suggesting that afferents from the MOB and PC end in different regions of the OT. Following MOB and PC stimulation antidromically invaded neurons were recorded in the ventral pallidal regions of the OT and in the vicinity of the islands of Calleja, respectively. These results demonstrate that the OT, which receives a monosynaptic input from the MOB, projects back to the bulb and that the PC seems to be also reciprocally linked with differentiated structures in the OT.
在氨基甲酸乙酯麻醉的大鼠中，使用场电位和单细胞记录来评估嗅结节（OT）与主嗅球（MOB）和梨状皮质（PC）之间的连接。MOB刺激后OT中诱发的深度剖面电流发生器位于PC电击诱发的电流发生器表面300微米处，这表明来自MOB和PC的传入纤维终止于OT的不同区域。分别在OT的腹侧苍白球区域和Calleja岛附近记录到了MOB和PC刺激后逆行侵入的神经元。这些结果表明，接受来自MOB单突触输入的OT会反向投射到嗅球，并且PC似乎也与OT中的不同结构相互连接。
