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dc.contributor.author
Neto, Sebastião Pacheco Duque
dc.contributor.author
Carneiro, Breno Tercio Santos
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Valentinuzzi, Verónica Sandra
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Araújo, John Fontenele
dc.date.available
2019-08-06T20:39:31Z
dc.date.issued
2008-06
dc.identifier.citation
Neto, Sebastião Pacheco Duque; Carneiro, Breno Tercio Santos; Valentinuzzi, Verónica Sandra; Araújo, John Fontenele; Dissociation of the circadian rhythm of locomotor activity in a 22 h light-dark cycle impairs passive avoidance but not object recognition memory in rats; Pergamon-Elsevier Science Ltd; Physiology And Behavior; 94; 3; 6-2008; 523-527
dc.identifier.issn
0031-9384
dc.identifier.uri
http://hdl.handle.net/11336/81036
dc.description.abstract
We analyzed the effect of dissociation of the circadian rhythm of locomotor activity on the performance in two memory tasks in rats. One group of animals was maintained in a normal 24 h light-dark cycle of 12:12 (T24 group, control). A second group was housed in a 22 h cycle of 11:11 (T22 group, experimental), a condition which is known to produce dissociation of the circadian rhythm of locomotor activity in two components. Both groups were tested on two memory tasks: passive avoidance and object recognition. An additional control group, kept under constant darkness (DD group), was used for a passive avoidance task. Testing occurred 30 min (short-term memory - STM) and 24 h (T24 and DD group) or 22 h (T22 group) (long-term memory - LTM) after training. The T22 group showed impairment on the passive avoidance task (STM and LTM) compared with the T24 and DD groups. On the object recognition task, the T22 and T24 groups performed similarly in all the sessions. In conclusion, circadian rhythm dissociation induced a performance deficit in the passive avoidance task but had no effect on the object recognition task. We suggest that dissociation of the circadian rhythm of locomotor activity may selectively affect some emotional component related to fear and risk evaluation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Circadian Rhythm
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Dissociation
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Learning And Memory
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Rat
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Otros Tópicos Biológicos
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Dissociation of the circadian rhythm of locomotor activity in a 22 h light-dark cycle impairs passive avoidance but not object recognition memory in rats
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-08-06T14:19:14Z
dc.journal.volume
94
dc.journal.number
3
dc.journal.pagination
523-527
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Neto, Sebastião Pacheco Duque. Universidade Federal do Rio Grande do Norte; Brasil
dc.description.fil
Fil: Carneiro, Breno Tercio Santos. Universidade Federal do Rio Grande do Norte; Brasil
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Fil: Valentinuzzi, Verónica Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Secretaría de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
dc.description.fil
Fil: Araújo, John Fontenele. Universidade Federal do Rio Grande do Norte; Brasil
dc.journal.title
Physiology And Behavior
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.physbeh.2008.03.013
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0031938408000887
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