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首页> 外文期刊>Journal of Behavioral and Brain Science >Conditioned Taste and Place Preferences Induced by Electrical Stimulation of the External Lateral Parabrachial Nucleus: A General Reinforcing Mechanism?
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Conditioned Taste and Place Preferences Induced by Electrical Stimulation of the External Lateral Parabrachial Nucleus: A General Reinforcing Mechanism?

机译：电刺激外部外侧臂旁臂旁核引起的条件性口味和位置偏爱：一般的增强机制？

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摘要

This study examined the stimulus specificity of external lateral parabrachial (LPBe) rewarding stimulation by using two identical learning procedures that may dissociate conditioned reinforcement to either the place or the flavor stimulus. Animals were presented with two distinct flavors in two different positions (left and right) that were varied throughout the experimental sessions. In the first experiment, LPBe stimulation was associated with one or other flavor, while in the second it was conditioned to one or other place in which these flavors were offered. The results show that, despite stimulus interferences, the animals develop specific conditioned preferences for the flavor stimuli (experiment 2A), and also for the place of their presentation (experiment 2B). These data are discussed in the context of brain reward systems and the biological constraints that characterize some learning modalities.
机译：这项研究通过使用两个相同的学习程序来检查外部外侧臂旁臂（LPBe）奖励刺激的刺激特异性，这些学习过程可能会将条件性增强与场所或风味刺激分离。在整个实验过程中，动物在两个不同的位置（左和右）呈现两种不同的风味。在第一个实验中，LPBe刺激与一种或其他风味有关，而在第二个实验中，将其调节到提供这些风味的一个或其他地方。结果表明，尽管有刺激干扰，但动物仍对味觉刺激（实验2A）以及其表现的位置（实验2B）表现出特定的条件偏好。在大脑奖励系统和表征某些学习方式的生物学限制的背景下讨论了这些数据。

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