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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.


Documento: Artículo
Título:Organization of optic lobes that support motion detection in a semiterrestrial crab
Autor:Sztarker, J.; Strausfeld, N.J.; Tomsic, D.
Filiación:Depto. Fisiologia, Biologia Molecular y Celular, Universidad de Buenos Aires, Inst. de Fis., Biologia Molecular y Neurociencias-Consejo de Investigaciones Cientificas y Tenisas, Buenos Aires 1428, Argentina
Arizona Research Laboratories, Division of Neurobiology, University of Arizona, Tucson, AZ 85721, United States
Depto. Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires 1428, Argentina
Palabras clave: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
Página de inicio:396
Página de fin:411
Título revista:Journal of Comparative Neurology
Título revista abreviado:J. Comp. Neurol.


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---------- APA ----------
Sztarker, J., Strausfeld, N.J. & Tomsic, D. (2005) . Organization of optic lobes that support motion detection in a semiterrestrial crab. Journal of Comparative Neurology, 493(3), 396-411.
---------- CHICAGO ----------
Sztarker, J., Strausfeld, N.J., Tomsic, D. "Organization of optic lobes that support motion detection in a semiterrestrial crab" . Journal of Comparative Neurology 493, no. 3 (2005) : 396-411.
---------- MLA ----------
Sztarker, J., Strausfeld, N.J., Tomsic, D. "Organization of optic lobes that support motion detection in a semiterrestrial crab" . Journal of Comparative Neurology, vol. 493, no. 3, 2005, pp. 396-411.
---------- VANCOUVER ----------
Sztarker, J., Strausfeld, N.J., Tomsic, D. Organization of optic lobes that support motion detection in a semiterrestrial crab. J. Comp. Neurol. 2005;493(3):396-411.