Publication: Rats conserve passive avoidance retention level throughout the light phase
of diurnal cycle.
Authors
Morales-Delgado, Nicanor ; Popovic, Natalija ; Cruz Sánchez, Ernesto de la ; Popovic Popovic, Miroljub
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Publisher
Elsevier
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DOI
https://doi.org/10.1016/j.physbeh.2023.114234
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info:eu-repo/semantics/article
Description
© 2023 The Author(s). This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
This document is the Published version of a Published Work that appeared in final form in Physiology & Behavior. To access the final edited and published work see https://doi.org/10.1016/j.physbeh.2023.114234
Abstract
Emotions and memory formation are sensible to circadian rhythm. Here we study whether the time of day during
the light phase of the diurnal cycle affects emotional memory in male Wistar rats using the passive avoidance
(PA) test. Experiments were conducted at the beginning of Zeitgeber time (ZT) (ZT0.5-2), mid-time (ZT5-6.5),
and end (ZT10.5-12) of the light period. Our results suggest that time of day has no impact on emotional response during acquisition trials, but slightly influences cognitive response during the 24-hour retention trial. Retention response was highest for ZT5-6.5, followed by ZT0.5-2, and lowest for ZT10.5-12.
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Citation
Physiology & Behavior, Vol. 268, 2023: 114234
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