Age-related deficits of long-term memory in the crab Chasmagnathus
Short- and long-term memory in adult crabs Chasmagnathus granulatus of different age are evaluated in two learning paradigms: habituation to a visual danger stimulus and appetitive conditioning. No difference between young, middle-aged and aged animals is found in short-term habituation with 15 trai...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_03407594_v178_n1_p139_Tomsic |
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todo:paper_03407594_v178_n1_p139_Tomsic2023-10-03T15:25:53Z Age-related deficits of long-term memory in the crab Chasmagnathus Tomsic, D. Dimant, B. Maldonado, H. Aging Appetitive conditioning Habituation Invertebrates Memory Short- and long-term memory in adult crabs Chasmagnathus granulatus of different age are evaluated in two learning paradigms: habituation to a visual danger stimulus and appetitive conditioning. No difference between young, middle-aged and aged animals is found in short-term habituation with 15 training trials. A good level of retention of the habituated response at 24 h is exhibited by young and middle-aged crabs but a poor one by aged crabs. When the training-to-testing interval is lengthened to 48 h or the training session reduced to 7 trials, young and middle-aged crabs continue to show long-term habituation but aged individuals exhibit no retention at all. As regards appetitive conditioning, young, middle-aged and aged crabs present similar short-term memory with 5 training trials and similar long-term memory when tested at 24 h, but an age-related deficit in long-term retention is exhibited when the intersession interval is lengthened to 48 h or the training reduced to 3 trials. Thus, a reduction of long-term memory related to age is demonstrated in the crab Chasmagnathus. Since it is shown in two different learning paradigms, the possibility of explaining the deficit in terms of a failure in memory mechanisms due to aging rather than as a consequence of ontogenetic shift in the crab's behavior is discussed. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03407594_v178_n1_p139_Tomsic |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Aging Appetitive conditioning Habituation Invertebrates Memory |
| spellingShingle |
Aging Appetitive conditioning Habituation Invertebrates Memory Tomsic, D. Dimant, B. Maldonado, H. Age-related deficits of long-term memory in the crab Chasmagnathus |
| topic_facet |
Aging Appetitive conditioning Habituation Invertebrates Memory |
| description |
Short- and long-term memory in adult crabs Chasmagnathus granulatus of different age are evaluated in two learning paradigms: habituation to a visual danger stimulus and appetitive conditioning. No difference between young, middle-aged and aged animals is found in short-term habituation with 15 training trials. A good level of retention of the habituated response at 24 h is exhibited by young and middle-aged crabs but a poor one by aged crabs. When the training-to-testing interval is lengthened to 48 h or the training session reduced to 7 trials, young and middle-aged crabs continue to show long-term habituation but aged individuals exhibit no retention at all. As regards appetitive conditioning, young, middle-aged and aged crabs present similar short-term memory with 5 training trials and similar long-term memory when tested at 24 h, but an age-related deficit in long-term retention is exhibited when the intersession interval is lengthened to 48 h or the training reduced to 3 trials. Thus, a reduction of long-term memory related to age is demonstrated in the crab Chasmagnathus. Since it is shown in two different learning paradigms, the possibility of explaining the deficit in terms of a failure in memory mechanisms due to aging rather than as a consequence of ontogenetic shift in the crab's behavior is discussed. |
| format |
JOUR |
| author |
Tomsic, D. Dimant, B. Maldonado, H. |
| author_facet |
Tomsic, D. Dimant, B. Maldonado, H. |
| author_sort |
Tomsic, D. |
| title |
Age-related deficits of long-term memory in the crab Chasmagnathus |
| title_short |
Age-related deficits of long-term memory in the crab Chasmagnathus |
| title_full |
Age-related deficits of long-term memory in the crab Chasmagnathus |
| title_fullStr |
Age-related deficits of long-term memory in the crab Chasmagnathus |
| title_full_unstemmed |
Age-related deficits of long-term memory in the crab Chasmagnathus |
| title_sort |
age-related deficits of long-term memory in the crab chasmagnathus |
| url |
http://hdl.handle.net/20.500.12110/paper_03407594_v178_n1_p139_Tomsic |
| work_keys_str_mv |
AT tomsicd agerelateddeficitsoflongtermmemoryinthecrabchasmagnathus AT dimantb agerelateddeficitsoflongtermmemoryinthecrabchasmagnathus AT maldonadoh agerelateddeficitsoflongtermmemoryinthecrabchasmagnathus |
| _version_ |
1807314778117373952 |