Preference for the light compartment of a light/dark cage does not affect rat exploratory behavior in the elevated plus-maze.

Abstract

The are few reports on the relationship between elevated plus-maze and effects of maintenance conditions in the days prior to the test. Previously, we have demonstrated that being forcibly in total dark or in light for four days does not alter exploratory behavior in the plus-maze. The present study aimed at recording illumination level preferences in rats using a box with light and dark compartments (or another with two light compartments) and the behavioral effect of this choice on the plus-maze. The rats allowed to express their preference to remain in one particular level of illumination tended to stay initially in the dark compartment and gradually preferred to remain in the light compartment. When tested in the elevated plus-maze there were no effects in comparison to controls kept in commercial cages.

Social Relationship as a Factor for the Development of Stress Incubation in Adult Mice

“…However, experimental animals normally display obvious but not inter-supporting behaviors in different tests with the same logic and assumptions ( Ramos, 2008 ). Furthermore, even if the behavioral results are consistent with the expectation, they can still be alternatively explained ( Garcia et al, 2008 ). The limitations can be due to circular arguments embedded in a reductive logic.…”

Development of PTSD-like behavior in adult mice after observing an acute traumatic event

“…However, experimental animals normally display obvious but not inter-supporting behaviors in different tests with the same logic and assumptions (Ramos, 2008). Furthermore, even if the behavioral results are consistent with the expectation, they can still be alternatively explained (Garcia et al, 2008). This ambiguity reaches deeply into the history of widely used behavioral tests and therefore have resulted in a considerable amount of inconclusive and seemingly paradoxical results, which are usually left for discussion or remain unreported (Carobrez and Bertoglio, 2005; Crusio, 2013; Engin and Treit, 2008; Ennaceur, 2014; Hascoët et al, 2001; Henriques-Alves and Queiroz, 2016; Kulesskaya and Voikar, 2014).…”

Investigation of anxiolytic effects of ethanol extract from banana peel (Musa paradisiaca L. var Semeru)

“…The anxiety index was computed as follows, according to Cohen et al [14], Anxiety Index = 1-[([Open arm time/Test duration] + [Open arms entries/Total number of entries])/2]. The more intense the anxiety, the lower the preference for open arms [15]. BPE 280 mg/kg shows an increase in the number of open-arm entries but does not show an increase in the anxiety index.…”