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Título: The diurnal variation of open-field habituation in rats
Fecha de publicación: 30-jun-2020
Editorial: Elsevier
Cita bibliográfica: Behavioural Processes, 178 (2020) 104186
ISSN: Print: 0376-6357
Electronic: 1872-8308
Materias relacionadas: CDU::6 - Ciencias aplicadas
Palabras clave: Anxiety
Habituation
Open-field test
Time-of-day
Rat
Resumen: The present study aimed to establish the effect of time of the day on habituation in the open-field test, one of the most elementary forms of non-associative hippocampal-dependent learning. Open-field test was performed in young adult male Wistar rats at the beginning (08:30−10:00 h; defined as Zeitgeber time (ZT) ZT0.5−2), mid-time (13:00−14:30 h, ZT5−6.5) and at the end (18:30−20:00 h, ZT10.5−12) of the light period. Our results revealed that in the acquisition trial there were no significant differences among the six parameters recorded through tested periods. In contrast, the level of habituation in the ambulation and rearing rose as followed: ZT0.5−2 < ZT10.5−12 < ZT5−6.5. In both trials, the principal component analysis highlights two components: component 1 was mainly loaded by ambulation in the outer and inner area, rearing and freezing behaviors, whereas component 2 was mostly loaded on grooming activity and defecation. The correlation between parameters varied across the period of day and trial. Animals that expressed a higher level of grooming, defecation (ZT5−6.5) and freezing behavior (ZT0.5−2 and ZT5−6.5) at acquisition trial habituated better on those parameters on the retention trial. In conclusion, habituation outcomes to the open-field test and correlation between tested parameters highly depend on daytime.
Autor/es principal/es: Poveda, Clara María
Popovic, Natalija
Morales-Delgado, Nicanor
De la Cruz-Sánchez, Ernesto
Caballero Bleda, María
Popovic, Miroljub
Facultad/Departamentos/Servicios: Facultades, Departamentos, Servicios y Escuelas::Departamentos de la UMU::Anatomía Humana y Psicobiología
Versión del editor: https://www.sciencedirect.com/science/article/abs/pii/S0376635720302497
URI: http://hdl.handle.net/10201/142382
DOI: https://doi.org/10.1016/j.beproc.2020.104186
Tipo de documento: info:eu-repo/semantics/article
Número páginas / Extensión: 6
Derechos: info:eu-repo/semantics/embargoedAccess
Descripción: © 2020 Elsevier B.V. All rights reserved. This document is the Published version of a Published Work that appeared in final form in Behavioural Processes. To access the final edited and published work see https://doi.org/10.1016/j.beproc.2020.104186
Aparece en las colecciones:Artículos: Anatomía Humana y Psicobiología

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