Neural pathways connecting the deutocerebrum and lateral protocerebrum in the brains of decapod crustaceans
Neural pathways connecting the deutocerebrum and lateral protocerebrum in the brains of decapod crustaceans
复制标题
十足目甲壳类动物大脑中连接副大脑和外侧原大脑的神经通路
DOI：
10.1002/cne.1394
复制
发表时间：
2001
影响因子：
2.5
通讯作者：
B. Beltz
中科院分区：
文献类型：
--
作者：
J. M. Sullivan;B. Beltz
真足十足甲壳动物的嗅叶和副叶是位于中脑内的双侧脑神经纤维区。虽然嗅叶似乎只接受初级嗅觉输入，但副脑叶接受更高阶的多模式(包括嗅觉)输入。嗅叶和副叶的输出通路都是由大量投射神经元的轴突提供的，这些投射神经元的胞体与嗅叶相邻。这些神经元的轴突形成一个大的束，在两侧投射到外侧前脑的终髓和半椭球体。为了深入了解嗅觉信息在离开中脑时是如何处理的，我们研究了三种真足十足甲壳动物的投射神经元通路的神经解剖学：淡水小龙虾Procambarus clarkii和Orconectes Rusticus，以及有爪龙虾Homarus americanus。通过向嗅叶和副叶局部注射亲脂示踪剂DiI和DiA来标记投射神经元。在所有三个物种中，均发现支配副叶的投射神经元仅支配半椭圆形小体的神经毛。相反，支配嗅叶的投射神经元主要针对终髓的神经纤维区。因此，这项研究的结果表明，来自嗅叶和副叶的投射神经元通路投射到外侧前脑的分离的、基本上不重叠的区域。这些发现对我们理解十足类甲壳类动物大脑中嗅觉信息的处理过程的意义进行了讨论。J.Comp.神经。441：9-22,2001。©2001 Wiley-Liss公司
The olfactory and accessory lobes of eureptantian decapod crustaceans are bilateral brain neuropil regions located within the deutocerebrum. Although the olfactory lobe seems to receive only primary olfactory inputs, the accessory lobe receives higher‐order multimodal (including olfactory) inputs. The output pathways from both the olfactory and accessory lobes are provided by the axons of a large population of projection neurons, whose somata lie adjacent to the lobes. The axons of these neurons form a large tract that projects bilaterally to the medulla terminalis and hemiellipsoid body in the lateral protocerebrum. To gain insights into the ways in which olfactory information is processed on leaving the deutocerebrum, we examined the neuroanatomy of the projection neuron pathways of three species of eureptantian decapod crustaceans: the freshwater crayfish, Procambarus clarkii and Orconectes rusticus, and the clawed lobster, Homarus americanus. Projection neurons were labeled by focal injections of the lipophilic tracers DiI and DiA into the olfactory and accessory lobes. In all three species, projection neurons innervating the accessory lobe were found to exclusively innervate the neuropils of the hemiellipsoid body. In contrast, projection neurons innervating the olfactory lobes primarily target neuropil regions of the medulla terminalis. The results of this study indicate, therefore, that the projection neuron pathways from the olfactory and accessory lobes project to separate, largely nonoverlapping regions of the lateral protocerebrum. The implications of these findings for our understanding of the processing of olfactory information in the brains of decapod crustaceans are discussed. J. Comp. Neurol. 441:9–22, 2001. © 2001 Wiley‐Liss, Inc.
多模式感觉输入汇聚到小龙虾嗅觉通路的高级神经元上。
DOI：
10.1152/jn.2000.84.6.3043
发表时间：
2000
期刊：
Journal of neurophysiology.
影响因子：
--
作者：
MellonJr,D
通讯作者：
MellonJr,D
膜电位的相干振荡使小龙虾中枢嗅觉神经元的脉冲爆发同步。
DOI：
10.1152/jn.1999.81.3.1231
发表时间：
1999
期刊：
Journal of neurophysiology.
影响因子：
--
作者：
MellonJr,D;Wheeler,CJ
通讯作者：
Wheeler,CJ
DOI：
10.1073/pnas.92.1.62
发表时间：
1995-01-03
影响因子：
11.1
作者：
ATEMA, J
通讯作者：
ATEMA, J