Effect of US identity on elimination and recovery of autoshaped responding with explicitly unpaired and degraded contingency extinction procedures
Effect of US identity on elimination and recovery of autoshaped responding with explicitly unpaired and degraded contingency extinction procedures
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DOI：
10.1016/j.beproc.2006.09.005
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发表时间：
2007-01-10
影响因子：
1.3
通讯作者：
Colwill, Ruth M.
中科院分区：
文献类型：
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作者：
Colwill, Ruth M.
在一系列以鸽子为对象的实验中，研究了非伴随性以及明确不配对的食物非条件刺激（USs）的抑制效应，以及从这些效应对自动形成反应的恢复情况。在实验1和2中，对先前与食物配对的键灯条件刺激（CS）的反应，被相同食物或不同食物的明确不配对呈现同等地抑制。此外，在移除明确受损的食物后，反应同等地恢复。相比之下，实验3和4表明，一种食物非条件刺激的非伴随性呈现，对与该相同食物配对的键灯条件刺激的反应抑制，比对与不同食物配对的键灯条件刺激的反应抑制更强。而且，移除非伴随性食物导致完全恢复，但相对于不同键灯，对相同键灯的反应更快地消退。讨论了这些结果对理解在关联性降低以及明确不配对消退程序之后反应的抑制和恢复的潜在机制的意义。（c）2006爱思唯尔B.V. 保留所有权利。
The depressive effects of noncontingent and explicitly unpaired food unconditioned stimuli (USs) and the recovery from those effects on autoshaped responding were examined in a series of experiments with pigeons. In Experiments I and 2, responding to a keylight conditioned stimulus (CS) previously paired with food was depressed equally by explicitly unpaired presentations of either that same food or a different food. Furthermore, responding recovered equally following removal of the explicitly impaired foods. In contrast, Experiments 3 and 4 showed that noncontingent presentations of a food US depressed responding more to a keylight CS paired with that same food than to a keylight CS paired with a different food. Moreover, removal of the noncontingent foods led to complete recovery but more rapid extinction of responding to the same keylight relative to the different keylight. The implications of these results for understanding the mechanisms underlying depression and recovery of responding following degraded contingency and explicitly unpaired extinction procedures are discussed. (c) 2006 Elsevier B.V. All rights reserved.