Fenton A A, Wesierska M, Kaminsky Y, Bures J
Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic.
Proc Natl Acad Sci U S A. 1998 Sep 15;95(19):11493-8. doi: 10.1073/pnas.95.19.11493.
Foraging rats learned to avoid footshock that was present in a part of a circular arena that was either stable or rotating slowly in a lighted room. The rotation dissociated spatial information in the separate reference frames of the room and arena. After learning to avoid the shocked region in either condition, in the absence of shock, memory for this place was expressed by simultaneous avoidance of an area defined in the reference frame of the room as well as of an area defined in the reference frame of the rotating arena. Spatial memories in these distinct reference frames were acquired, retrieved, and extinguished autonomously.
觅食的大鼠学会避开圆形竞技场中某个区域的足部电击，该区域在明亮的房间里要么是固定的，要么是缓慢旋转的。旋转使房间和竞技场这两个不同参照系中的空间信息产生了分离。在学会在任何一种条件下避开电击区域后，在没有电击的情况下，对这个地方的记忆表现为同时避开在房间参照系中定义的一个区域以及在旋转竞技场参照系中定义的一个区域。这些不同参照系中的空间记忆是自主获取、检索和消退的。
