Bingman V P, Casini G, Nocjar C, Jones T J
Department of Psychology, Bowling Green State University, Ohio 43403.
Brain Behav Evol. 1994;43(4-5):206-18. doi: 10.1159/000113635.
The piriform cortex in homing pigeons receives a projection from the olfactory bulb and is necessary for the operation of those aspects of the navigational map based on olfactory stimuli in these animals. The afferent and efferent projections of the piriform cortex were studied using retrograde migration of wheat-germ agglutinin horseradish peroxidase (WGA-HRP) and Fast Blue, and anterograde migration of WGA-HRP. The piriform cortex was found to receive projections from, and send projections to, numerous regions and nuclei in the telencephalon, diencephalon and lower brainstem. A reciprocal connection with the parahippocampal region suggests that the piriform cortex and hippocampal formation may be part of a neural system that regulates navigational map learning. The piriform cortex also connects reciprocally with a large portion of the anterior telencephalon, including the cortex prepiriformis and hyperstriatum dorsale. In general, the pathway connections of the piriform cortex in homing pigeons are similar to those of the piriform cortex in mammals.
归巢鸽的梨状皮质接收来自嗅球的投射，并且对于这些动物基于嗅觉刺激的导航地图的那些方面的运作是必需的。使用小麦胚凝集素辣根过氧化物酶（WGA-HRP）和固蓝的逆行迁移以及WGA-HRP的顺行迁移，研究了梨状皮质的传入和传出投射。发现梨状皮质接收来自端脑、间脑和低位脑干中众多区域和核团的投射，并向这些区域和核团发出投射。与海马旁区域的相互连接表明，梨状皮质和海马结构可能是调节导航地图学习的神经系统的一部分。梨状皮质还与大部分前脑相互连接，包括梨状前皮质和背侧上纹状体。一般来说，归巢鸽梨状皮质的通路连接与哺乳动物梨状皮质的通路连接相似。
