Anatomy of the mushroom bodies in the honey bee brain: The neuronal connections of the alpha‐lobe
Anatomy of the mushroom bodies in the honey bee brain: The neuronal connections of the alpha‐lobe
复制标题
蜜蜂大脑蘑菇体的解剖：α-叶的神经连接
DOI：
10.1002/cne.903340309
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发表时间：
1993
影响因子：
2.5
通讯作者：
R. Menzel
中科院分区：
文献类型：
--
作者：
J. Rybak;R. Menzel
借助氯化钴和高尔基体染色方法，研究了蘑菇体 (MB) 和蜜蜂大脑其他原脑区域之间的神经连接。将钴离子局部注射到 MB 的 α 叶神经纤维中，揭示了位于每个大脑半球的原大脑和后大脑的七个体细胞簇。这些神经元将蘑菇体神经毡与原大脑区域连接起来，数量约为 400 个。它们在不同位置接触 α 叶的分层组织。有些不仅投射到 α 叶，还投射到 β 叶和蒂神经纤维。形态学上描述了形成原脑内回路的十五种细胞类型。它们可分为三类：（1）单侧神经元，投射域仅限于同侧原大脑；这些神经元将 α 叶与原脑叶区域连接起来，并以垂直于 α 叶纵轴排列的密集层状树枝状分支进行分枝； (2) 循环神经元，将 MB 的子区室相互连接，在神经毡的不同水平形成环；它们的树枝状结构主要局限于同侧MB的α叶、β叶、花梗和肾盏；它们还在 α 叶的神经毡周围稀疏地分枝； (3)双侧神经元，它们或者将两个α叶互连，或者将同侧α叶和原大脑叶与对侧半球的背外侧原大脑叶连接起来。本研究揭示了 MB 不同区室与原大脑其他部分的连接，并在有关 MB 在蜜蜂大脑中的功能作用的假设背景下进行了讨论。 © 1993 Wiley-Liss, Inc.
Neural connections between the mushroom body (MB) and other protocerebral areas of the honeybee's brain were studied with the help of cobalt chloride and Golgi staining methods. Focal injections of cobalt ions into the α‐lobe neuropil of the MB reveal seven clusters of somata located in the protocerebrum and deutocerebrum of each brain hemisphere. These neurons connect the mushroom body neuropil with protocerebral areas and number approximately 400. They contact the layered organization of the α‐lobe at different locations. Some project not only into the α‐lobe, but also into the β‐lobe and pedunculus neuropils. Fifteen cell types which form intraprotocerebral circuits are morphologically described. They can be divided into three categories: (1) unilateral neurons, with projection fields restricted to the ipsilateral protocerebrum; these neurons connect the α‐lobe with areas in the protocerebral lobe and ramify with densely layered arborisations arranged perpendicularly to the longitudinal axis of the α‐lobe; (2) recurrent neurons, which interconnect subcompartments of the MB, forming loops at different leveles of the neuropil; their arborisations are mainly restricted to the α‐lobe, β‐lobe, pedunculus, and calyces of the ipsilateral MB; they also ramify sparsely around the neuropil of the α‐lobe; and (3) bilateral neurons, which either interconnect both α‐lobes or connect the ipsilateral α‐lobe and protocerebral lobe with the dorsolateral protocerebral lobe of the conntralateral hemisphere. The connections of different compartments of the MB with other parts of the protocerebrum as revealed in this study are discussed in the context of hypotheses about the functional role of MBs in the honeybee brain. © 1993 Wiley‐Liss, Inc.