Visual interneurons of the crab Chasmagnathus studied by intracellular recordings in vivo
Comparative physiology of visual systems has become an important field of investigation. However, despite the fact that Crustacea represents a major phylogenetic group, research on the physiology of vision of these animals is scant and almost limited to the crayfish. We developed a preparation to st...
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todo:paper_03407594_v187_n1_p37_BerondeAstrada2023-10-03T15:25:57Z Visual interneurons of the crab Chasmagnathus studied by intracellular recordings in vivo Berón de Astrada, M. Sztarker, J. Tomsic, D. Crustacea In vivo intracellular recording Visual interneurons animal article Brachyura brain electrophysiology excitatory postsynaptic potential interneuron male photostimulation physiology vision Animals Brachyura Brain Electrophysiology Excitatory Postsynaptic Potentials Interneurons Male Photic Stimulation Vision Animalia Astacoidea Brachyura Chasmagnathus Crustacea Decapoda (Crustacea) Insecta Comparative physiology of visual systems has become an important field of investigation. However, despite the fact that Crustacea represents a major phylogenetic group, research on the physiology of vision of these animals is scant and almost limited to the crayfish. We developed a preparation to study in vivo the visual nervous system of a semiterrestrial crab through intracellular recordings. The response to a pulse of light was investigated in 206 interneurons from 38 animals. Seventy-eight of these neurons could be classified by functional criteria as sustaining cells, dimming cells, nonspiking hyperpolarizing cells and nonspiking depolarizing cells. Quantitative description is provided for the first two groups and qualitative description is given for the last two. The remaining neurons presented a broad range of different types of phasic responses to light. Although semiterrestrial crabs are behaviorally more reactive to visual stimuli than the crayfish, the general physiological properties of identified lamina and medullary neurons of Chasmagnathus resemble those of the crayfish. The results described here represent the first attempt to study the visual system of crabs with intracellular recordings and constitute the beginning of a project aimed to investigate the neuronal functions underlying behavioral responses elicited by visual stimuli. Fil:Berón de Astrada, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03407594_v187_n1_p37_BerondeAstrada |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Crustacea In vivo intracellular recording Visual interneurons animal article Brachyura brain electrophysiology excitatory postsynaptic potential interneuron male photostimulation physiology vision Animals Brachyura Brain Electrophysiology Excitatory Postsynaptic Potentials Interneurons Male Photic Stimulation Vision Animalia Astacoidea Brachyura Chasmagnathus Crustacea Decapoda (Crustacea) Insecta |
| spellingShingle |
Crustacea In vivo intracellular recording Visual interneurons animal article Brachyura brain electrophysiology excitatory postsynaptic potential interneuron male photostimulation physiology vision Animals Brachyura Brain Electrophysiology Excitatory Postsynaptic Potentials Interneurons Male Photic Stimulation Vision Animalia Astacoidea Brachyura Chasmagnathus Crustacea Decapoda (Crustacea) Insecta Berón de Astrada, M. Sztarker, J. Tomsic, D. Visual interneurons of the crab Chasmagnathus studied by intracellular recordings in vivo |
| topic_facet |
Crustacea In vivo intracellular recording Visual interneurons animal article Brachyura brain electrophysiology excitatory postsynaptic potential interneuron male photostimulation physiology vision Animals Brachyura Brain Electrophysiology Excitatory Postsynaptic Potentials Interneurons Male Photic Stimulation Vision Animalia Astacoidea Brachyura Chasmagnathus Crustacea Decapoda (Crustacea) Insecta |
| description |
Comparative physiology of visual systems has become an important field of investigation. However, despite the fact that Crustacea represents a major phylogenetic group, research on the physiology of vision of these animals is scant and almost limited to the crayfish. We developed a preparation to study in vivo the visual nervous system of a semiterrestrial crab through intracellular recordings. The response to a pulse of light was investigated in 206 interneurons from 38 animals. Seventy-eight of these neurons could be classified by functional criteria as sustaining cells, dimming cells, nonspiking hyperpolarizing cells and nonspiking depolarizing cells. Quantitative description is provided for the first two groups and qualitative description is given for the last two. The remaining neurons presented a broad range of different types of phasic responses to light. Although semiterrestrial crabs are behaviorally more reactive to visual stimuli than the crayfish, the general physiological properties of identified lamina and medullary neurons of Chasmagnathus resemble those of the crayfish. The results described here represent the first attempt to study the visual system of crabs with intracellular recordings and constitute the beginning of a project aimed to investigate the neuronal functions underlying behavioral responses elicited by visual stimuli. |
| format |
JOUR |
| author |
Berón de Astrada, M. Sztarker, J. Tomsic, D. |
| author_facet |
Berón de Astrada, M. Sztarker, J. Tomsic, D. |
| author_sort |
Berón de Astrada, M. |
| title |
Visual interneurons of the crab Chasmagnathus studied by intracellular recordings in vivo |
| title_short |
Visual interneurons of the crab Chasmagnathus studied by intracellular recordings in vivo |
| title_full |
Visual interneurons of the crab Chasmagnathus studied by intracellular recordings in vivo |
| title_fullStr |
Visual interneurons of the crab Chasmagnathus studied by intracellular recordings in vivo |
| title_full_unstemmed |
Visual interneurons of the crab Chasmagnathus studied by intracellular recordings in vivo |
| title_sort |
visual interneurons of the crab chasmagnathus studied by intracellular recordings in vivo |
| url |
http://hdl.handle.net/20.500.12110/paper_03407594_v187_n1_p37_BerondeAstrada |
| work_keys_str_mv |
AT berondeastradam visualinterneuronsofthecrabchasmagnathusstudiedbyintracellularrecordingsinvivo AT sztarkerj visualinterneuronsofthecrabchasmagnathusstudiedbyintracellularrecordingsinvivo AT tomsicd visualinterneuronsofthecrabchasmagnathusstudiedbyintracellularrecordingsinvivo |
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