Brown Michael F, Farley Robert F, Lorek Edward J
Department of Psychology, Villanova University, Villanova, PA 19085, USA.
J Exp Psychol Anim Behav Process. 2007 Jul;33(3):213-24. doi: 10.1037/0097-7403.33.3.213.
Pairs of rats were tested in a radial-arm maze to determine whether the spatial choices made by one rat affect the subsequent spatial choices of the other rat. In a free-choice procedure, rats showed an increased tendency to choose the location that had most recently been chosen by a foraging partner but a decreased tendency to visit locations that the foraging partner had visited earlier. Forced-choice procedures were used to better control the social stimulus and the interactions between the rats. Under some conditions, locations were chosen later in the choice sequence of a subject rat if another rat had been observed choosing that location. Odor and other physical traces of the other rat's visits were ruled out as explanations for this effect. The results demonstrate the existence of working memory for locations visited by a familiar conspecific.
将成对的大鼠置于放射状臂迷宫中进行测试，以确定一只大鼠做出的空间选择是否会影响另一只大鼠随后的空间选择。在自由选择程序中，大鼠表现出增加的倾向，即选择觅食伙伴最近选择过的位置，但减少了前往觅食伙伴较早前访问过的位置的倾向。采用强制选择程序以更好地控制社会刺激以及大鼠之间的互动。在某些条件下，如果观察到另一只大鼠选择了某个位置，那么受试大鼠会在其选择序列中更晚地选择该位置。其他大鼠访问留下的气味和其他物理痕迹被排除作为对此效应的解释。结果证明存在对熟悉同种个体访问过的位置的工作记忆。
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