Exploration in a dark open field: A shift from directional to positional progression and a proposed model of acquiring spatial information
Exploration in a dark open field: A shift from directional to positional progression and a proposed model of acquiring spatial information
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DOI：
10.1016/j.bbr.2006.04.006
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发表时间：
2006-08-10
影响因子：
2.7
通讯作者：
Eilam, David
中科院分区：
文献类型：
--
作者：
Avni, Reut;Zadicario, Pazit;Eilam, David
在黑暗开放场地中的探索经历了三个渐进的变化：（i）最初阶段在竞技场的各个区域花费相同的时间，变为停留在角落，最终将大部分时间花在一个角落； (ii) 行进路径最初是圆形的，散布在整个竞技场中，但逐渐固定在其起点和终点的一个角落； (iii) 行驶距离逐渐减少到在明亮的开阔场地中看到的初始水平。总而言之，啮齿动物从与环境耦合较弱的“循环”探索机制转变为牢固锚定于环境的“基地”探索。这种转变还包括从短暂和零星的返回到反复返回特定的、可能熟悉的地方，动物从其他地方导航回该地方。我们认为，这种切换首先通过方向，然后通过位置环境线索来说明导航，正如“平行地图理论”中假设的那样。我们还认为，从循环到本垒行为的转变是通过三种空间信息处理模式进行空间表示的层次结构的一部分：（i）引导顺序处理，基于从一个地标移动到下一个地标； (ii) 定向并行处理，基于从一个点移动到下一个点，具有相同的起点和终点； (iii) 导航-连续处理，基于不断更新与环境中多个位置相关的位置（地图导航）。 (c) 2006 Elsevier B.V. 保留所有权利。
Exploration in a dark open field undergoes three progressive changes: (i) an initial phase of spending equal amounts of time in various zones of the arena changes to staying in the corners, and ultimately spending most of the time in one corner; (ii) travel paths are first circular and scattered all over the arena, but gradually become anchored to one corner at which they start and end; (iii) traveled distance gradually decreases to that of the initial level seen in a lit open field. Altogether, rodents shift from a 'looping' exploration mechanism with feeble coupling with the environment, to 'home base' exploration which is firmly anchored to the environment. This shift also involves switching from momentary and sporadic to repeated returns to a specific, presumably familiar place, to which the animal navigates back from various other places. We suggest that this switching illustrates navigation first by directional and,then by positional environmental cues, as hypothesized in the 'parallel map theory'. We also suggest that the transition from looping to home base behavior is part of a hierarchal construction of space representation via three modes of spatial information processing: (i) piloting-sequential processing, based on moving from one landmark to the next; (ii) orienting-parallel processing, based on moving from one point to the next, with the same starting and ending point; (iii) navigating-continuous processing, based on continuously updating the position in relation to several locations in the environment (map navigation). (c) 2006 Elsevier B.V. All rights reserved.