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Neuroarchitecture of the central complex of the desert locust: Tangential neurons.

Abstract

The central complex (CX) comprises a group of midline neuropils in the insect brain, consisting of the protocerebral bridge (PB), the upper (CBU) and lower division (CBL) of the central body and a pair of globular noduli. It receives prominent input from the visual system and plays a major role in spatial orientation of the animals. Vertical slices and horizontal layers of the CX are formed by columnar, tangential, and pontine neurons. While pontine and columnar neurons have been analyzed in detail, especially in the fruit fly and desert locust, understanding of the organization of tangential cells is still rudimentary. As a basis for future functional studies, we have studied the morphologies of tangential neurons of the CX of the desert locust Schistocerca gregaria. Intracellular dye injections revealed 43 different types of tangential neuron, 8 of the PB, 5 of the CBL, 24 of the CBU, 2 of the noduli, and 4 innervating multiple substructures. Cell bodies of these neurons were located in 11 different clusters in the cell body rind. Judging from the presence of fine versus beaded terminals, the vast majority of these neurons provide input into the CX, especially from the lateral complex (LX), the superior protocerebrum, the posterior slope, and other surrounding brain areas, but not directly from the mushroom bodies. Connections are largely subunit- and partly layer-specific. No direct connections were found between the CBU and the CBL. Instead, both subdivisions are connected in parallel with the PB and distinct layers of the noduli.

Authors+Show Affiliations

Fachbereich Biologie, Tierphysiologie, and Center for Mind, Brain and Behavior (CMBB), University of Marburg and Justus Liebig University Giessen, Germany.Fachbereich Biologie, Tierphysiologie, and Center for Mind, Brain and Behavior (CMBB), University of Marburg and Justus Liebig University Giessen, Germany.Fachbereich Biologie, Tierphysiologie, and Center for Mind, Brain and Behavior (CMBB), University of Marburg and Justus Liebig University Giessen, Germany.Fachbereich Biologie, Tierphysiologie, and Center for Mind, Brain and Behavior (CMBB), University of Marburg and Justus Liebig University Giessen, Germany.Fachbereich Biologie, Tierphysiologie, and Center for Mind, Brain and Behavior (CMBB), University of Marburg and Justus Liebig University Giessen, Germany.Fachbereich Biologie, Tierphysiologie, and Center for Mind, Brain and Behavior (CMBB), University of Marburg and Justus Liebig University Giessen, Germany.Fachbereich Biologie, Tierphysiologie, and Center for Mind, Brain and Behavior (CMBB), University of Marburg and Justus Liebig University Giessen, Germany.Fachbereich Biologie, Tierphysiologie, and Center for Mind, Brain and Behavior (CMBB), University of Marburg and Justus Liebig University Giessen, Germany.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31625611

Citation

von Hadeln, Joss, et al. "Neuroarchitecture of the Central Complex of the Desert Locust: Tangential Neurons." The Journal of Comparative Neurology, 2019.
von Hadeln J, Hensgen R, Bockhorst T, et al. Neuroarchitecture of the central complex of the desert locust: Tangential neurons. J Comp Neurol. 2019.
von Hadeln, J., Hensgen, R., Bockhorst, T., Rosner, R., Heidasch, R., Pegel, U., ... Homberg, U. (2019). Neuroarchitecture of the central complex of the desert locust: Tangential neurons. The Journal of Comparative Neurology, doi:10.1002/cne.24796.
von Hadeln J, et al. Neuroarchitecture of the Central Complex of the Desert Locust: Tangential Neurons. J Comp Neurol. 2019 Oct 18; PubMed PMID: 31625611.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Neuroarchitecture of the central complex of the desert locust: Tangential neurons. AU - von Hadeln,Joss, AU - Hensgen,Ronja, AU - Bockhorst,Tobias, AU - Rosner,Ronny, AU - Heidasch,Ronny, AU - Pegel,Uta, AU - Quintero Pérez,Manuel, AU - Homberg,Uwe, Y1 - 2019/10/18/ PY - 2019/07/31/received PY - 2019/10/10/revised PY - 2019/10/11/accepted PY - 2019/10/19/pubmed PY - 2019/10/19/medline PY - 2019/10/19/entrez KW - Schistocerca gregaria KW - RRID: AB_2315056 KW - RRID: AB_2315425 KW - RRID: AB_2337244 KW - RRID: AB_260435 KW - RRID: AB_261363 KW - RRID: Nif-0000-00262 KW - RRID: nlx_157287 KW - central body KW - insect brain KW - neuroanatomy KW - protocerebral bridge KW - sky compass navigation JF - The Journal of comparative neurology JO - J. Comp. Neurol. N2 - The central complex (CX) comprises a group of midline neuropils in the insect brain, consisting of the protocerebral bridge (PB), the upper (CBU) and lower division (CBL) of the central body and a pair of globular noduli. It receives prominent input from the visual system and plays a major role in spatial orientation of the animals. Vertical slices and horizontal layers of the CX are formed by columnar, tangential, and pontine neurons. While pontine and columnar neurons have been analyzed in detail, especially in the fruit fly and desert locust, understanding of the organization of tangential cells is still rudimentary. As a basis for future functional studies, we have studied the morphologies of tangential neurons of the CX of the desert locust Schistocerca gregaria. Intracellular dye injections revealed 43 different types of tangential neuron, 8 of the PB, 5 of the CBL, 24 of the CBU, 2 of the noduli, and 4 innervating multiple substructures. Cell bodies of these neurons were located in 11 different clusters in the cell body rind. Judging from the presence of fine versus beaded terminals, the vast majority of these neurons provide input into the CX, especially from the lateral complex (LX), the superior protocerebrum, the posterior slope, and other surrounding brain areas, but not directly from the mushroom bodies. Connections are largely subunit- and partly layer-specific. No direct connections were found between the CBU and the CBL. Instead, both subdivisions are connected in parallel with the PB and distinct layers of the noduli. SN - 1096-9861 UR - https://www.unboundmedicine.com/medline/citation/31625611/Neuroarchitecture_of_the_central_complex_of_the_desert_locust:_Tangential_neurons L2 - https://doi.org/10.1002/cne.24796 DB - PRIME DP - Unbound Medicine ER -