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首页> 外文期刊>The European Journal of Neuroscience >Secondary visual cortex is critical to the expression of surprise-induced enhancements in cue associability in rats
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Secondary visual cortex is critical to the expression of surprise-induced enhancements in cue associability in rats

机译：次级视皮层对于突触诱导的大鼠提示关联性增强表达至关重要

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摘要

Considerable evidence indicates that reinforcement prediction error, the difference between the obtained and expected reinforcer values, modulates attention to potential cues for reinforcement. The surprising delivery or omission of a reinforcer enhances the associability of the stimuli that were present when the error was induced, so that they more readily enter into new associations in the future. Previous research from our laboratory identified brain circuit elements critical to the enhancement of stimulus associability by omission of an expected event and to the subsequent expression of that altered associability in more rapid learning. A key finding was that the rat posterior parietal cortex was essential during the encoding, consolidation and retrieval of associability memories that were altered by the surprising omission of an expected event in a serial prediction task. Here, we found that the function of adjacent secondary visual cortex was critical only to the expression of altered cue associability in that same task. This specialization of function is discussed in the context of broader cortical and subcortical networks for modulation of attention in associative learning, as well as recent anatomical investigations that suggest that the rodent posterior parietal cortex overlaps with and may subsume secondary visual cortex.
机译：大量证据表明，钢筋预测误差，即所获得的钢筋值与预期钢筋值之间的差，会引起人们注意潜在的钢筋提示。增强剂的令人惊讶的递送或省略增强了诱发错误时出现的刺激的关联性，因此将来它们更容易进入新的关联。我们实验室的先前研究发现，大脑回路元件对于通过省略预期事件来增强刺激联想能力以及随后在更快速的学习中改变联想能力的表达至关重要。一个关键的发现是，大鼠后顶叶皮层在关联性记忆的编码，合并和检索过程中是必不可少的，这些关联性记忆由于在一系列预测任务中意外丢失预期事件而改变。在这里，我们发现相邻的次要视觉皮层的功能仅对同一任务中提示线索关联性表达的表达至关重要。这种功能的特殊性在更广泛的皮质和皮质下网络中进行了讨论，以调节联想学习中的注意力，以及最近的解剖学研究表明，啮齿动物的后顶叶皮层与次生视觉皮层重叠，并且可能包含次级皮层。

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