Spatial navigation on the radial maze with trial-unique intramaze cues and restricted extramaze cues

被引:9
作者
Babb, SJ [1 ]
Crystal, JD [1 ]
机构
[1] Univ Georgia, Dept Psychol, Athens, GA 30602 USA
关键词
intramaze; extramaze; radial maze; rats; spatial navigation;
D O I
10.1016/S0376-6357(03)00125-6
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
We investigated the use of extramaze and intramaze cues on the eight-arm radial maze. The rats received daily training consisting of forced-choice visits to four baited arms, a retention interval, and the availability of all eight arms with baits available at arms that did not appear in the forced-choice phase. The radial maze was placed in a featureless octagonal enclosure to minimize the availability of extramaze cues. Intramaze cues were provided at the distal end of each arm by placing a small object in front of the food trough; unique objects were randomly sampled from a large pool of objects. The use of extramaze and intramaze cues was assessed by rotating the objects, after the retention interval, on occasional non-rewarded probes, thereby dissociating the location of extramaze and intramaze cues. The rats used extramaze rather than intramaze cues. Implications for spatial representations are discussed. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:103 / 111
页数:9
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