Cardiovascular component of the context signal memory in the crab Chasmagnathus
Research on diverse models of memory in vertebrates demonstrates that behavioral, autonomic and endocrine responses occur together during fear conditioning. With invertebrates, no similar studies have been performed despite the extensive study of fear memory paradigms, as the context signal memory (...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_03407594_v192_n1_p69_Hermitte |
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todo:paper_03407594_v192_n1_p69_Hermitte2023-10-03T15:26:02Z Cardiovascular component of the context signal memory in the crab Chasmagnathus Hermitte, G. Maldonado, H. Conditioned emotional response Crustacea Heart rate Memory Neuroautonomic adjustments animal animal behavior article autonomic nervous system Brachyura conditioning endocrine system escape behavior fear heart heart rate locomotion male memory physiology vision Animals Autonomic Nervous System Behavior, Animal Brachyura Conditioning (Psychology) Endocrine System Escape Reaction Fear Heart Heart Rate Locomotion Male Memory Visual Perception Research on diverse models of memory in vertebrates demonstrates that behavioral, autonomic and endocrine responses occur together during fear conditioning. With invertebrates, no similar studies have been performed despite the extensive study of fear memory paradigms, as the context signal memory (CSM) of the crab Chasmagnathus granulatus, usually assessed by a behavioral parameter. Here, we study the crab's CSM, considering both the behavioral response and the concomitant neuroautonomic adjustments resulting in a heart rate alteration. Results show that upon the first presentation of the visual danger stimulus, a heart arrest followed by bradycardia is triggered together with a conspicuous escape response. The latter declines throughout training, while heart arrests become sporadic and bradycardia tends to deepen along the session. At test, 24 h after training, the outcome clearly contrasts with that shown at training, namely, stimulus presentation in the same context induces lower escape, no heart arrests and quick suppression of bradycardia. These results support the view that the same memory process brings about the changes in both responses. High escape, heart arrest and bradycardia are considered three parameters of the unconditioned response while minor escape, no heart arrests and bradycardia attenuation are three parameters of the learned response. © Springer-Verlag 2005. Fil:Hermitte, G. 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_v192_n1_p69_Hermitte |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Conditioned emotional response Crustacea Heart rate Memory Neuroautonomic adjustments animal animal behavior article autonomic nervous system Brachyura conditioning endocrine system escape behavior fear heart heart rate locomotion male memory physiology vision Animals Autonomic Nervous System Behavior, Animal Brachyura Conditioning (Psychology) Endocrine System Escape Reaction Fear Heart Heart Rate Locomotion Male Memory Visual Perception |
| spellingShingle |
Conditioned emotional response Crustacea Heart rate Memory Neuroautonomic adjustments animal animal behavior article autonomic nervous system Brachyura conditioning endocrine system escape behavior fear heart heart rate locomotion male memory physiology vision Animals Autonomic Nervous System Behavior, Animal Brachyura Conditioning (Psychology) Endocrine System Escape Reaction Fear Heart Heart Rate Locomotion Male Memory Visual Perception Hermitte, G. Maldonado, H. Cardiovascular component of the context signal memory in the crab Chasmagnathus |
| topic_facet |
Conditioned emotional response Crustacea Heart rate Memory Neuroautonomic adjustments animal animal behavior article autonomic nervous system Brachyura conditioning endocrine system escape behavior fear heart heart rate locomotion male memory physiology vision Animals Autonomic Nervous System Behavior, Animal Brachyura Conditioning (Psychology) Endocrine System Escape Reaction Fear Heart Heart Rate Locomotion Male Memory Visual Perception |
| description |
Research on diverse models of memory in vertebrates demonstrates that behavioral, autonomic and endocrine responses occur together during fear conditioning. With invertebrates, no similar studies have been performed despite the extensive study of fear memory paradigms, as the context signal memory (CSM) of the crab Chasmagnathus granulatus, usually assessed by a behavioral parameter. Here, we study the crab's CSM, considering both the behavioral response and the concomitant neuroautonomic adjustments resulting in a heart rate alteration. Results show that upon the first presentation of the visual danger stimulus, a heart arrest followed by bradycardia is triggered together with a conspicuous escape response. The latter declines throughout training, while heart arrests become sporadic and bradycardia tends to deepen along the session. At test, 24 h after training, the outcome clearly contrasts with that shown at training, namely, stimulus presentation in the same context induces lower escape, no heart arrests and quick suppression of bradycardia. These results support the view that the same memory process brings about the changes in both responses. High escape, heart arrest and bradycardia are considered three parameters of the unconditioned response while minor escape, no heart arrests and bradycardia attenuation are three parameters of the learned response. © Springer-Verlag 2005. |
| format |
JOUR |
| author |
Hermitte, G. Maldonado, H. |
| author_facet |
Hermitte, G. Maldonado, H. |
| author_sort |
Hermitte, G. |
| title |
Cardiovascular component of the context signal memory in the crab Chasmagnathus |
| title_short |
Cardiovascular component of the context signal memory in the crab Chasmagnathus |
| title_full |
Cardiovascular component of the context signal memory in the crab Chasmagnathus |
| title_fullStr |
Cardiovascular component of the context signal memory in the crab Chasmagnathus |
| title_full_unstemmed |
Cardiovascular component of the context signal memory in the crab Chasmagnathus |
| title_sort |
cardiovascular component of the context signal memory in the crab chasmagnathus |
| url |
http://hdl.handle.net/20.500.12110/paper_03407594_v192_n1_p69_Hermitte |
| work_keys_str_mv |
AT hermitteg cardiovascularcomponentofthecontextsignalmemoryinthecrabchasmagnathus AT maldonadoh cardiovascularcomponentofthecontextsignalmemoryinthecrabchasmagnathus |
| _version_ |
1807323534995750912 |