Organization of optic lobes that support motion detection in a semiterrestrial crab

There is a mismatch between the documentation of the visually guided behaviors and visual physiology of decapods (Malacostraca, Crustacea) and knowledge about the neural architecture of their visual systems. The present study provides a description of the neuroanatomical features of the four visual...

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Autores principales:	Sztarker, Julieta, Tomsic, Daniel
Publicado:	2005
Materias:	Arthropod Crustacean Insect Learning and memory Vision animal tissue arthropod article crab Crustacea histology image reconstruction insect learning memory nonhuman optic lobe priority journal vision visual nervous system Animals Brachyura Male Memory Motion Perception Neuropil Optic Lobe Visual Pathways
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219967_v493_n3_p396_Sztarker http://hdl.handle.net/20.500.12110/paper_00219967_v493_n3_p396_Sztarker
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00219967_v493_n3_p396_Sztarker
record_format	dspace
spelling	paper:paper_00219967_v493_n3_p396_Sztarker2023-06-08T14:44:59Z Organization of optic lobes that support motion detection in a semiterrestrial crab Sztarker, Julieta Tomsic, Daniel Arthropod Crustacean Insect Learning and memory Vision animal tissue arthropod article crab Crustacea histology image reconstruction insect learning memory nonhuman optic lobe priority journal vision visual nervous system Animals Brachyura Male Memory Motion Perception Neuropil Optic Lobe Vision Visual Pathways There is a mismatch between the documentation of the visually guided behaviors and visual physiology of decapods (Malacostraca, Crustacea) and knowledge about the neural architecture of their visual systems. The present study provides a description of the neuroanatomical features of the four visual neuropils of the grapsid crab Chasmagnathus granulatus, which is currently used as a model for investigating the neurobiology of learning and memory. Visual memory in Chasmagnathus is thought to be driven from within deep retinotopic neuropil by large-field motion-sensitive neurons. Here we describe the neural architecture characterizing the Chasmagnathus lobula, in which such neurons are found. It is shown that, unlike the equivalent region of insects, the malacostracan lobula is densely packed with columns, the spacing of which is the same as that of retinotopic units of the lamina. The lobula comprises many levels of strata and columnar afferents that supply systems of tangential neurons. Two of these, which are known to respond to movement across the retina, have orthogonally arranged dendritic fields deep in the lobula. They also show evidence of dye coupling. We discuss the significance of commonalties across taxa with respect to the organization of the lamina and medulla and contrasts these with possible taxon-specific arrangements of deeper neuropils that support systems of matched filters. © 2005 Wiley-Liss, Inc. Fil:Sztarker, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tomsic, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219967_v493_n3_p396_Sztarker http://hdl.handle.net/20.500.12110/paper_00219967_v493_n3_p396_Sztarker
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Arthropod Crustacean Insect Learning and memory Vision animal tissue arthropod article crab Crustacea histology image reconstruction insect learning memory nonhuman optic lobe priority journal vision visual nervous system Animals Brachyura Male Memory Motion Perception Neuropil Optic Lobe Vision Visual Pathways
spellingShingle	Arthropod Crustacean Insect Learning and memory Vision animal tissue arthropod article crab Crustacea histology image reconstruction insect learning memory nonhuman optic lobe priority journal vision visual nervous system Animals Brachyura Male Memory Motion Perception Neuropil Optic Lobe Vision Visual Pathways Sztarker, Julieta Tomsic, Daniel Organization of optic lobes that support motion detection in a semiterrestrial crab
topic_facet	Arthropod Crustacean Insect Learning and memory Vision animal tissue arthropod article crab Crustacea histology image reconstruction insect learning memory nonhuman optic lobe priority journal vision visual nervous system Animals Brachyura Male Memory Motion Perception Neuropil Optic Lobe Vision Visual Pathways
description	There is a mismatch between the documentation of the visually guided behaviors and visual physiology of decapods (Malacostraca, Crustacea) and knowledge about the neural architecture of their visual systems. The present study provides a description of the neuroanatomical features of the four visual neuropils of the grapsid crab Chasmagnathus granulatus, which is currently used as a model for investigating the neurobiology of learning and memory. Visual memory in Chasmagnathus is thought to be driven from within deep retinotopic neuropil by large-field motion-sensitive neurons. Here we describe the neural architecture characterizing the Chasmagnathus lobula, in which such neurons are found. It is shown that, unlike the equivalent region of insects, the malacostracan lobula is densely packed with columns, the spacing of which is the same as that of retinotopic units of the lamina. The lobula comprises many levels of strata and columnar afferents that supply systems of tangential neurons. Two of these, which are known to respond to movement across the retina, have orthogonally arranged dendritic fields deep in the lobula. They also show evidence of dye coupling. We discuss the significance of commonalties across taxa with respect to the organization of the lamina and medulla and contrasts these with possible taxon-specific arrangements of deeper neuropils that support systems of matched filters. © 2005 Wiley-Liss, Inc.
author	Sztarker, Julieta Tomsic, Daniel
author_facet	Sztarker, Julieta Tomsic, Daniel
author_sort	Sztarker, Julieta
title	Organization of optic lobes that support motion detection in a semiterrestrial crab
title_short	Organization of optic lobes that support motion detection in a semiterrestrial crab
title_full	Organization of optic lobes that support motion detection in a semiterrestrial crab
title_fullStr	Organization of optic lobes that support motion detection in a semiterrestrial crab
title_full_unstemmed	Organization of optic lobes that support motion detection in a semiterrestrial crab
title_sort	organization of optic lobes that support motion detection in a semiterrestrial crab
publishDate	2005
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219967_v493_n3_p396_Sztarker http://hdl.handle.net/20.500.12110/paper_00219967_v493_n3_p396_Sztarker
work_keys_str_mv	AT sztarkerjulieta organizationofopticlobesthatsupportmotiondetectioninasemiterrestrialcrab AT tomsicdaniel organizationofopticlobesthatsupportmotiondetectioninasemiterrestrialcrab
_version_	1768545817507921920

Organization of optic lobes that support motion detection in a semiterrestrial crab

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