How visual space maps in the optic neuropils of a crab
The Decapoda is the largest order of crustaceans, some 10,000 species having been described to date. The order includes shrimps, lobsters, crayfishes, and crabs. Most of these are highly visual animals that display complex visually guided behaviors and, consequently, large areas of their nervous sys...
| Autores principales: | , |
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| Publicado: |
2011
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219967_v519_n9_p1631_DeAstrada http://hdl.handle.net/20.500.12110/paper_00219967_v519_n9_p1631_DeAstrada |
| Aporte de: |
| id |
paper:paper_00219967_v519_n9_p1631_DeAstrada |
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| record_format |
dspace |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Behavior Malacostracan Retinotopy Visual system dye tracer animal anatomy animal tissue article Brachyura Chasmagnathus granulatus crab Decapoda (Crustacea) male neuropil nonhuman optic chiasm optic neuropil predator priority journal retina vision visual field visual nervous system visual stimulation Animals Brachyura Male Neuropil Optic Lobe, Nonmammalian Visual Fields Visual Pathways Visual Perception |
| spellingShingle |
Behavior Malacostracan Retinotopy Visual system dye tracer animal anatomy animal tissue article Brachyura Chasmagnathus granulatus crab Decapoda (Crustacea) male neuropil nonhuman optic chiasm optic neuropil predator priority journal retina vision visual field visual nervous system visual stimulation Animals Brachyura Male Neuropil Optic Lobe, Nonmammalian Visual Fields Visual Pathways Visual Perception Medan, Violeta Tomsic, Daniel How visual space maps in the optic neuropils of a crab |
| topic_facet |
Behavior Malacostracan Retinotopy Visual system dye tracer animal anatomy animal tissue article Brachyura Chasmagnathus granulatus crab Decapoda (Crustacea) male neuropil nonhuman optic chiasm optic neuropil predator priority journal retina vision visual field visual nervous system visual stimulation Animals Brachyura Male Neuropil Optic Lobe, Nonmammalian Visual Fields Visual Pathways Visual Perception |
| description |
The Decapoda is the largest order of crustaceans, some 10,000 species having been described to date. The order includes shrimps, lobsters, crayfishes, and crabs. Most of these are highly visual animals that display complex visually guided behaviors and, consequently, large areas of their nervous systems are dedicated to visual processing. However, our knowledge of the organization and functioning of the visual nervous system of these animals is still limited. Beneath the retina lie three serially arranged optic neuropils connected by two chiasmata. Here, we apply dye tracers in different areas of the retina or the optic neuropils to investigate the organization of visual space maps in the optic neuropils of the brachyuran crab Chasmagnathus granulatus. Our results reveal the way in which the visual space is represented in the three main optic neuropils of a decapod. We show that the crabs' optic chiasmata are oriented perpendicular to each other, an arrangement that seems to be unique among malacostracans. Crabs use retinal position in azimuth and elevation to categorize visual stimuli; for instance, stimuli moving above or below the horizon are interpreted as predators or conspecifics, respectively. The retinotopic maps revealed in the present study create the possibility of relating particular regions of the optic neuropils with distinct behavioral responses elicited by stimuli occurring in different regions of the visual field. © 2011 Wiley-Liss, Inc. |
| author |
Medan, Violeta Tomsic, Daniel |
| author_facet |
Medan, Violeta Tomsic, Daniel |
| author_sort |
Medan, Violeta |
| title |
How visual space maps in the optic neuropils of a crab |
| title_short |
How visual space maps in the optic neuropils of a crab |
| title_full |
How visual space maps in the optic neuropils of a crab |
| title_fullStr |
How visual space maps in the optic neuropils of a crab |
| title_full_unstemmed |
How visual space maps in the optic neuropils of a crab |
| title_sort |
how visual space maps in the optic neuropils of a crab |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219967_v519_n9_p1631_DeAstrada http://hdl.handle.net/20.500.12110/paper_00219967_v519_n9_p1631_DeAstrada |
| work_keys_str_mv |
AT medanvioleta howvisualspacemapsintheopticneuropilsofacrab AT tomsicdaniel howvisualspacemapsintheopticneuropilsofacrab |
| bdutipo_str |
Repositorios |
| _version_ |
1764820557943013377 |