Rat spatial memory and foraging on dual radial mazes.

IF 1.9 4区 心理学 Q3 BEHAVIORAL SCIENCES Learning & Behavior Pub Date : 2024-03-01 Epub Date: 2023-06-20 DOI:10.3758/s13420-023-00592-2
William A Roberts, Krista Macpherson, Sophia Robinson, Abagail Hennessy, Bram Richmond
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Abstract

Three experiments are reported that used a new test of spatial memory in rats. The apparatus used was dual eight-arm radial mazes that were connected at one arm of each maze, with a start arm and doors to each maze. Rats could be forced to go to one maze or the other or could make a free choice between mazes. In Experiment 1, rats formed reference memory for the arm containing food on one maze but had food randomly placed on different arms over trials on the other maze. In Experiment 2, rats formed working memory for the arm containing food on one maze but not the other. In Experiment 3, food location changed randomly among trials on both mazes, but one maze contained a cue for the location of food. Rats used reference and working memory to go directly to the food arm on one maze but found food only after searching several arms on the other maze. Most importantly, when given free-choice trials rats developed a significant preference for the maze where they knew the location of food reward or found the cue indicating the location of reward. We suggest these findings may be best interpreted by rats applying two successive rules: (1) choose the maze that leads to the most immediate reward, and (2) use extramaze or intramaze cues to find reward location on the maze.

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大鼠在双径向迷宫中的空间记忆和觅食能力
报告中的三项实验采用了一种新的大鼠空间记忆测试方法。使用的仪器是双八臂径向迷宫,每个迷宫的一臂相连,每个迷宫都有一个起始臂和门。大鼠可以被迫进入其中一个迷宫,也可以在两个迷宫之间自由选择。在实验 1 中,大鼠在一个迷宫中对装有食物的臂形成了参考记忆,但在另一个迷宫的试验中,食物被随机放置在不同的臂上。在实验 2 中,大鼠在一个迷宫中对装有食物的手臂形成了工作记忆,而在另一个迷宫中则没有。在实验 3 中,食物的位置在两个迷宫的试验中随机改变,但其中一个迷宫包含食物位置的提示。在一个迷宫中,大鼠利用参考记忆和工作记忆直接前往食物臂,但在另一个迷宫中,大鼠只有在搜索了几个食物臂后才找到食物。最重要的是,在进行自由选择试验时,大鼠明显偏好知道食物奖励位置或找到指示奖励位置线索的迷宫。我们认为,大鼠应用两个连续规则可以最好地解释这些发现:(1)选择能带来最直接奖励的迷宫;(2)利用迷宫外或迷宫内的线索来寻找迷宫中的奖励位置。
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来源期刊
Learning & Behavior
Learning & Behavior 医学-动物学
CiteScore
2.90
自引率
5.60%
发文量
50
审稿时长
>12 weeks
期刊介绍: Learning & Behavior publishes experimental and theoretical contributions and critical reviews concerning fundamental processes of learning and behavior in nonhuman and human animals. Topics covered include sensation, perception, conditioning, learning, attention, memory, motivation, emotion, development, social behavior, and comparative investigations.
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