Few behavioral tests allow measuring several characteristics and most require training, complex analyses, and/or are time-consuming. We present an apparatus based on rat exploratory behavior. Composed of three different environments, it allows the assessment more than one characteristic in a short 3-min session. Factorial analyses have defined dimensions, which we named Exploration, Impulsivity, Self-protection. Behaviors composing Exploration factor were increased by chlordiazepoxide...

The elevated gradient of aversion (EGA) is an apparatus for investigating the exploratory behavior rats in 3-min sessions, consisting three different sections same size: tunnel, closed arm, and open arm. Factorial analyses have defined factors: exploration, impulsivity, self-protection. In general, male are placed tunnel end tend to hesitate leaving this starting point. Then, they entering which explore avoid arm or even just stick their head not enter it at all. Since females were used test...

Exploratory behavior is a commonly used instrument in the study of animal laboratory, usually using rodents. The goal present was to investigate exploratory woodlice (Armadillidium vulgare) and compare rats (Rattus norvegicus). For this, we two common rat laboratory tests: square open-field another inspired Light/Dark box. In first test, were submitted open-field; also an adapted their size. second box Dry/Moist designed be equivalent apparatus but Results test showed both explored...

There are several studies in the literature showing that male and female rats explore novel environments exhibit different exploration patterns when submitted to apparatuses. In general, spend more time moving exploring apparatuses than males do. A previous study showed woodlice (Armadillidium vulgare) a very similar way (Rattus norvegicus) tested analogous open-field test light/dark box. Since was conducted only with woodlice, since they exhibited of behavior, present experiment aimed at...

Bidirectional selection is a procedure in which an arbitrary characteristic chosen as criterion and animals exhibiting more of this are bred one group less another group. The repeated along generations until the selected becomes stable, resulting two strains that opposite relation to characteristic. present study aimed at selectively breeding rats either high or low tendency socialize by using proximity test. We tested male female Wistar square open field with communicating birdcage,...