The forgetting of stimulus attributes in latent inhibition.
The forgetting of stimulus attributes in latent inhibition.
复制标题
潜在抑制中刺激属性的遗忘。
DOI：
10.1016/j.physbeh.2008.09.012
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发表时间：
2009
影响因子：
2.9
通讯作者：
Riccio,DavidC
中科院分区：
文献类型：
--
作者：
Metzger,MitchellM;Riccio,DavidC
许多研究表明，遗忘的刺激属性是一种常见的现象，也就是说，生物体忘记的特定特征的训练刺激长的保留时间间隔，而保留一般信息的训练刺激本身。然而，大多数研究都是在学习事件后检查这种效果，并且几乎没有帐户来测试是否在训练之前出现的刺激会发生属性遗忘。因此，本实验的目的是测试这种可能性，并检查是否遗忘的刺激属性发生之前，在条件性味觉厌恶（CTA）程序的味道刺激的培训。具体地，使用潜伏抑制（LI）程序来测量在短和长保留间隔内对预先暴露的风味的遗忘程度。结果表明，大鼠忘记了特定的特征的味道刺激（CS），而保留的记忆暴露前的会议在一个长的保留时间间隔。也就是说，受试者预暴露和条件与不同浓度的蔗糖显示没有LI效应与1天的延迟之间的预暴露和训练，但表现出广义LI与8天的延迟之间的预暴露和条件。该实验进一步证明了刺激属性遗忘的鲁棒性，并证明了这种特定类型的遗忘也发生在CTA任务的学习之前。
Numerous studies have demonstrated that the forgetting of stimulus attributes is a common occurrence; that is, organisms forget the specific characteristics of training stimuli over long retention intervals, while retaining general information of the training stimuli themselves. However, most studies have examined this effect after a learning episode, and there have been virtually no accounts to test whether the forgetting of attributes occurs for stimuli presented prior to training. Therefore, this experiment was designed to test that possibility, and it examined whether the forgetting of stimulus attributes occurred prior to training for the flavor stimulus in a conditioned taste aversion (CTA) procedure. Specifically, a latent inhibition (LI) procedure was used to measure the extent of forgetting for a pre-exposed flavor over short and long retention intervals. The results indicate that rats forgot the specific characteristics of the flavor stimulus (CS) while retaining memory for pre-exposure sessions over a long retention interval. That is, subjects pre-exposed and conditioned with different concentrations of sucrose showed no LI effect with a 1-day delay between pre-exposure and training, but demonstrated a generalized LI with an 8-day delay between pre-exposure and conditioning. This experiment provides further evidence for the robustness of the forgetting of stimulus attributes, and demonstrates that this specific type of forgetting also occurs prior to the learning of a CTA task.