Hierarchical and Binary Associations Compete for Behavioral Control During Instrumental Biconditional Discrimination
Hierarchical and Binary Associations Compete for Behavioral Control During Instrumental Biconditional Discrimination
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DOI：
10.1037/a0030941
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发表时间：
2013-01-01
期刊：
影响因子：
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通讯作者：
Balleine, Bernard W.
中科院分区：
文献类型：
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作者：
Bradfield, Laura A.;Balleine, Bernard W.
在两个实验中，我们研究了分层S-（R-O）联想（而不是联想替代方案）在解决大鼠双条件歧视问题中的作用。使用已知减弱R-O联想学习的后背内侧纹状体的损伤和减弱S-R学习的背外侧纹状体的损伤，我们发现，影响R-O学习的损伤消除了双盲辨别，而背外侧纹状体的损伤没有（实验1）。此外，在实验2中，我们发现，使用更具挑战性的歧视，协议，背外侧纹状体病变实际上增强双连续性歧视学习。这些结果提供了证据，等级S-（R-O）协会影响工具性辨别学习和竞争与S-R协会的控制性能。
In two experiments we investigated the role of hierarchical S-(R-O) associations, as opposed to associative alternatives, in solving biconditional discrimination problems in rats. Using lesions of posterior dorsomedial striatum known to attenuate R-O associative learning, and lesions of the dorsolateral striatum that attenuate S-R learning, we found that whereas the lesions affecting R-O leanring abolished biconditional discrimination, lesions of dorsolateral striatum did not (Experiment 1). Furthermore, in Experiment 2, we found Using a more challenging discrimination, protocol, that dorsolateral striatal lesions actually enhanced biconditional discrimination learning. These results provide evidence that hierarchical S-(R-O) associations influence instrumental discrimination learning and compete with S-R associations for control of performance.