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首页> 外文期刊>The European Journal of Neuroscience >Delay activity in avian prefrontal cortex--sample code or reward code?
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Delay activity in avian prefrontal cortex--sample code or reward code?

机译：延迟鸟类前额叶皮层的活动-样本代码还是奖励代码？

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摘要

In the current study, we examined whether delay activity in the avian equivalent of the prefrontal cortex (PFC) represents a neural correlate of a to-be-remembered sample stimulus or an upcoming reward. Birds were trained on a directed forgetting paradigm in which sample stimuli (red and white) were either followed by a cue to remember (high-frequency tone) or a cue to forget (low-frequency tone). The task also incorporated a differential outcomes procedure in which a correct response on the memory test following a red (remember) sample was rewarded with food, but correct responses on the memory test following the white (remember) sample were not. If delay activity represents a sample code, then it should be seen on both red-remember and white-remember trials. On the other hand, if delay activity represents a reward code, then delay activity should be seen only on red-remember trials, but not white-remember trials. Our findings suggest that activity in the avian PFC represents the outcome associated with each sample (reward or no reward) rather than memory for the sample itself.
机译：在当前的研究中，我们检查了前额叶皮层（PFC）的禽等效物的延迟活动是否代表要记忆的样本刺激或即将获得的奖励的神经相关性。在定向遗忘范例中对鸟类进行训练，在样本范例中，样本刺激（红色和白色）之后是要记住的提示（高频音）或要忘记的提示（低频音）。该任务还采用了差异结果程序，其中对红色（记住）样本后的记忆测试做出正确的反应可以得到食物的奖励，而对白色（记住）样本后的记忆测试则没有正确的响应。如果延迟活动代表示例代码，则应在记住红色和记住白色的试验中都看到它。另一方面，如果延迟活动代表奖励代码，则延迟活动应仅在红色记忆试验中看到，而不能在白色记忆试验中看到。我们的发现表明，禽类PFC中的活性代表与每个样本相关的结果（奖励或无回报），而不是样本本身的记忆力。

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