Massed and spaced training build up different components of long-term habituation in the crab Chasmagnathus

Autores
Pedreira, M.E.; Romano, A.; Tomsic, D.; Lozada, M.; Maldonado, H.
Año de publicación
1998
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The crab Chasmagnathus granulatus reacts to a shadow passing overhead with an escape response that habituates after 30 trials and for 5 days at least. The effect of a wide range of different intertrial intervals (ITIs) (0, 9, 27, 45, 81, 135, and 171 sec) on the Chasmagnathus long-term habituation (LTH) was evaluated at 24 h. Memory retention was estimated separately at two phases of a six-trial testing session: at first trial (the initial testing phase) and at the subsequent block of five trials (the retraining phase). A training of 30 trials with an ITI equal to or longer than 27 sec induced LTH at both testing phases, however, with a 0- or a 9- sec ITI, training wholly failed to build up LTH. When the number of trials was increased, a massed training (ITI = 0 or 9 sec) induced LTH at re- training but not at initial testing. Thus, massed training produces LTH only at retraining, whereas spaced training (ITI ≤ 27 sec) produces LTH at both initial phase and retraining. An ITI shift from training to testing diminished or abolished retention at retraining regardless of the direction of the shift, thus suggesting that crabs acquire a memory of the trial- spacing at training. According to these results, it is postulated that LTH consists of two memory components: one produced by spaced training and expressed at both initial testing and retraining, and one yielded by massed training and expressed only at retraining. The possibility that the two components of LTH were differentially affected by cycloxemide and context shift is discussed.
Fil:Pedreira, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Romano, A. 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.
Fil:Lozada, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente
Anim. Learn. Behav. 1998;26(1):34-45
Materia
animal behavior
animal experiment
article
crab
escape behavior
habituation
long term memory
male
memory consolidation
nonhuman
time
training
Animalia
Chasmagnathus
Chasmagnathus
Chasmagnathus granulata
Decapoda (Crustacea)
Invertebrata
Iti
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/2.5/ar
Repositorio
Biblioteca Digital (UBA-FCEN)
Institución
Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
OAI Identificador
paperaa:paper_00904996_v26_n1_p34_Pedreira

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oai_identifier_str paperaa:paper_00904996_v26_n1_p34_Pedreira
network_acronym_str BDUBAFCEN
repository_id_str 1896
network_name_str Biblioteca Digital (UBA-FCEN)
spelling Massed and spaced training build up different components of long-term habituation in the crab ChasmagnathusPedreira, M.E.Romano, A.Tomsic, D.Lozada, M.Maldonado, H.animal behavioranimal experimentarticlecrabescape behaviorhabituationlong term memorymalememory consolidationnonhumantimetrainingAnimaliaChasmagnathusChasmagnathusChasmagnathus granulataDecapoda (Crustacea)InvertebrataItiThe crab Chasmagnathus granulatus reacts to a shadow passing overhead with an escape response that habituates after 30 trials and for 5 days at least. The effect of a wide range of different intertrial intervals (ITIs) (0, 9, 27, 45, 81, 135, and 171 sec) on the Chasmagnathus long-term habituation (LTH) was evaluated at 24 h. Memory retention was estimated separately at two phases of a six-trial testing session: at first trial (the initial testing phase) and at the subsequent block of five trials (the retraining phase). A training of 30 trials with an ITI equal to or longer than 27 sec induced LTH at both testing phases, however, with a 0- or a 9- sec ITI, training wholly failed to build up LTH. When the number of trials was increased, a massed training (ITI = 0 or 9 sec) induced LTH at re- training but not at initial testing. Thus, massed training produces LTH only at retraining, whereas spaced training (ITI ≤ 27 sec) produces LTH at both initial phase and retraining. An ITI shift from training to testing diminished or abolished retention at retraining regardless of the direction of the shift, thus suggesting that crabs acquire a memory of the trial- spacing at training. According to these results, it is postulated that LTH consists of two memory components: one produced by spaced training and expressed at both initial testing and retraining, and one yielded by massed training and expressed only at retraining. The possibility that the two components of LTH were differentially affected by cycloxemide and context shift is discussed.Fil:Pedreira, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Romano, A. 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.Fil:Lozada, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.1998info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12110/paper_00904996_v26_n1_p34_PedreiraAnim. Learn. Behav. 1998;26(1):34-45reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar2025-10-16T09:29:59Zpaperaa:paper_00904996_v26_n1_p34_PedreiraInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-10-16 09:30:00.015Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
dc.title.none.fl_str_mv Massed and spaced training build up different components of long-term habituation in the crab Chasmagnathus
title Massed and spaced training build up different components of long-term habituation in the crab Chasmagnathus
spellingShingle Massed and spaced training build up different components of long-term habituation in the crab Chasmagnathus
Pedreira, M.E.
animal behavior
animal experiment
article
crab
escape behavior
habituation
long term memory
male
memory consolidation
nonhuman
time
training
Animalia
Chasmagnathus
Chasmagnathus
Chasmagnathus granulata
Decapoda (Crustacea)
Invertebrata
Iti
title_short Massed and spaced training build up different components of long-term habituation in the crab Chasmagnathus
title_full Massed and spaced training build up different components of long-term habituation in the crab Chasmagnathus
title_fullStr Massed and spaced training build up different components of long-term habituation in the crab Chasmagnathus
title_full_unstemmed Massed and spaced training build up different components of long-term habituation in the crab Chasmagnathus
title_sort Massed and spaced training build up different components of long-term habituation in the crab Chasmagnathus
dc.creator.none.fl_str_mv Pedreira, M.E.
Romano, A.
Tomsic, D.
Lozada, M.
Maldonado, H.
author Pedreira, M.E.
author_facet Pedreira, M.E.
Romano, A.
Tomsic, D.
Lozada, M.
Maldonado, H.
author_role author
author2 Romano, A.
Tomsic, D.
Lozada, M.
Maldonado, H.
author2_role author
author
author
author
dc.subject.none.fl_str_mv animal behavior
animal experiment
article
crab
escape behavior
habituation
long term memory
male
memory consolidation
nonhuman
time
training
Animalia
Chasmagnathus
Chasmagnathus
Chasmagnathus granulata
Decapoda (Crustacea)
Invertebrata
Iti
topic animal behavior
animal experiment
article
crab
escape behavior
habituation
long term memory
male
memory consolidation
nonhuman
time
training
Animalia
Chasmagnathus
Chasmagnathus
Chasmagnathus granulata
Decapoda (Crustacea)
Invertebrata
Iti
dc.description.none.fl_txt_mv The crab Chasmagnathus granulatus reacts to a shadow passing overhead with an escape response that habituates after 30 trials and for 5 days at least. The effect of a wide range of different intertrial intervals (ITIs) (0, 9, 27, 45, 81, 135, and 171 sec) on the Chasmagnathus long-term habituation (LTH) was evaluated at 24 h. Memory retention was estimated separately at two phases of a six-trial testing session: at first trial (the initial testing phase) and at the subsequent block of five trials (the retraining phase). A training of 30 trials with an ITI equal to or longer than 27 sec induced LTH at both testing phases, however, with a 0- or a 9- sec ITI, training wholly failed to build up LTH. When the number of trials was increased, a massed training (ITI = 0 or 9 sec) induced LTH at re- training but not at initial testing. Thus, massed training produces LTH only at retraining, whereas spaced training (ITI ≤ 27 sec) produces LTH at both initial phase and retraining. An ITI shift from training to testing diminished or abolished retention at retraining regardless of the direction of the shift, thus suggesting that crabs acquire a memory of the trial- spacing at training. According to these results, it is postulated that LTH consists of two memory components: one produced by spaced training and expressed at both initial testing and retraining, and one yielded by massed training and expressed only at retraining. The possibility that the two components of LTH were differentially affected by cycloxemide and context shift is discussed.
Fil:Pedreira, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Romano, A. 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.
Fil:Lozada, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
description The crab Chasmagnathus granulatus reacts to a shadow passing overhead with an escape response that habituates after 30 trials and for 5 days at least. The effect of a wide range of different intertrial intervals (ITIs) (0, 9, 27, 45, 81, 135, and 171 sec) on the Chasmagnathus long-term habituation (LTH) was evaluated at 24 h. Memory retention was estimated separately at two phases of a six-trial testing session: at first trial (the initial testing phase) and at the subsequent block of five trials (the retraining phase). A training of 30 trials with an ITI equal to or longer than 27 sec induced LTH at both testing phases, however, with a 0- or a 9- sec ITI, training wholly failed to build up LTH. When the number of trials was increased, a massed training (ITI = 0 or 9 sec) induced LTH at re- training but not at initial testing. Thus, massed training produces LTH only at retraining, whereas spaced training (ITI ≤ 27 sec) produces LTH at both initial phase and retraining. An ITI shift from training to testing diminished or abolished retention at retraining regardless of the direction of the shift, thus suggesting that crabs acquire a memory of the trial- spacing at training. According to these results, it is postulated that LTH consists of two memory components: one produced by spaced training and expressed at both initial testing and retraining, and one yielded by massed training and expressed only at retraining. The possibility that the two components of LTH were differentially affected by cycloxemide and context shift is discussed.
publishDate 1998
dc.date.none.fl_str_mv 1998
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12110/paper_00904996_v26_n1_p34_Pedreira
url http://hdl.handle.net/20.500.12110/paper_00904996_v26_n1_p34_Pedreira
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/2.5/ar
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Anim. Learn. Behav. 1998;26(1):34-45
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
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instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
repository.name.fl_str_mv Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
repository.mail.fl_str_mv ana@bl.fcen.uba.ar
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