Greiner Birgit, Gadenne Christophe, Anton Sylvia
Department of Cell and Organism Biology, Lund University, S-22362 Lund, Sweden.
J Comp Neurol. 2004 Jul 19;475(2):202-10. doi: 10.1002/cne.20173.
The glomerular structure of the primary olfactory neuropil has long been thought to play an important role in odour coding. In insects, the number of glomeruli in the antennal lobe is limited in most species to fewer than 100 compared with more than 1,000 in vertebrates, making it possible to identify individual glomeruli. A complete three-dimensional atlas of the glomeruli within the antennal lobe of the male noctuid moth Agrotis ipsilon was constructed. All 66 glomeruli were singly identifiable in both antennal lobes of the three brains investigated. Further, six antennal lobes containing intracellularly stained projection neurones were reconstructed. By using the atlas, the respective target glomerulus of each projection neurone could be identified. The importance of the glomerular atlas as a tool to study central olfactory processing and its plasticity is discussed.
长期以来，人们一直认为初级嗅觉神经纤维的肾小球结构在气味编码中起着重要作用。在昆虫中，与脊椎动物中超过1000个相比，大多数物种触角叶中的肾小球数量限制在100个以下，这使得识别单个肾小球成为可能。构建了雄性夜蛾小地老虎触角叶内肾小球的完整三维图谱。在所研究的三个大脑的两个触角叶中，所有66个肾小球都可以单独识别。此外，重建了六个含有细胞内染色投射神经元的触角叶。通过使用该图谱，可以识别每个投射神经元的相应目标肾小球。讨论了肾小球图谱作为研究中枢嗅觉处理及其可塑性工具的重要性。
