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Effects of inference on dopaminergic prediction errors depend on orbitofrontal processing.
Behavioral Neuroscience ( IF 1.9 ) Pub Date : 2017-3-17 , DOI: 10.1037/bne0000192
Yuji K Takahashi 1 , Thomas A Stalnaker 1 , Matthew R Roesch 2 , Geoffrey Schoenbaum 1
Affiliation  

Dopaminergic reward prediction errors in monkeys reflect inferential reward predictions that well-trained animals can make when associative rules change. Here, in a new analysis of previously described data, we test whether dopaminergic error signals in rats are influenced by inferential predictions and whether such effects depend on the orbitofrontal cortex (OFC). Dopamine neurons were recorded from controls or rats with ipsilateral OFC lesions during performance of a choice task in which odor cues signaled the availability of sucrose reward in 2 wells. To induce prediction errors, we manipulated either the timing or number of rewards delivered in each well across blocks of trials. Of importance, a change in reward at 1 well predicted a change in reward at the other on later trials. We compared behavior and neural activity on trials when such inference was possible versus trials involving the same reward change when inference was not possible. Rats responded faster when they could infer an increase in reward compared to when the same reward was coming but they could not infer a change. This inferential prediction was reflected in the firing of dopamine neurons in controls, which changed less to unexpected delivery (or omission) of reward and more to the new high-value cue on inference versus noninference trials. These effects were absent in dopamine neurons recorded in rats with ipsilateral OFC lesions. Thus, dopaminergic error signals recorded in rats are influenced by both experiential and inferential reward predictions, and the effects of inferential predictions depend on OFC. (PsycINFO Database Record

中文翻译:

推理对多巴胺能预测误差的影响取决于眶额处理。

猴子中的多巴胺能回报预测错误反映出训练有素的动物在关联规则发生变化时可以做出的推论性回报预测。在这里,在对先前描述的数据进行的新分析中,我们测试了大鼠中的多巴胺能错误信号是否受推论性预测的影响,以及此类影响是否取决于眶额皮质(OFC)。在执行选择任务期间,从对照组或患有同侧OFC损伤的大鼠中记录多巴胺神经元,在该任务中,气味提示信号表明2口井中蔗糖奖励的有效性。为了引起预测错误,我们操纵了跨试验块在每口井中提供的奖励的时机或数量。重要的是,在以后的试验中,一口井的奖励变化会预测另一口井的奖励变化。我们比较了在可能进行推理时试验的行为和神经活动与在不可能进行推理时涉及相同奖励变化的试验的比较。与能够获得相同奖励但无法推断出变化的老鼠相比,它们能够推断出增加的奖励时反应更快。这种推论性预测反映在对照组中多巴胺神经元的发射中,这种变化较少地转变为奖励的意外传递(或遗漏),而更多的是推理和非推理试验的新高价值提示。在具有同侧OFC损伤的大鼠中记录的多巴胺神经元中没有这些作用。因此,大鼠中记录的多巴胺能错误信号受经验性和推论性奖励预测的影响,并且推论性预测的效果取决于OFC。(PsycINFO数据库记录 与能够获得相同奖励但无法推断出变化的老鼠相比,它们能够推断出增加的奖励时反应更快。这种推论性预测反映在对照组中多巴胺神经元的发射中,这种变化较少地转变为奖励的意外传递(或遗漏),而更多的是推理和非推理试验的新高价值提示。在具有同侧OFC损伤的大鼠中记录的多巴胺神经元中没有这些作用。因此,大鼠中记录的多巴胺能错误信号受经验性和推论性奖励预测的影响,并且推论性预测的效果取决于OFC。(PsycINFO数据库记录 与能够获得相同奖励但无法推断出变化的老鼠相比,它们能够推断出增加的奖励时反应更快。这种推论性预测反映在对照组中多巴胺神经元的发射中,这种变化较少地转变为奖励的意外传递(或遗漏),而更多的是推理和非推理试验的新高价值提示。在具有同侧OFC损伤的大鼠中记录的多巴胺神经元中没有这些作用。因此,大鼠中记录的多巴胺能错误信号受经验性和推论性奖励预测的影响,并且推论性预测的效果取决于OFC。(PsycINFO数据库记录 相对于推论(非推论)试验,新的高价值线索在意料之外的奖励(或遗漏)的传递方面有所减少。在具有同侧OFC损伤的大鼠中记录的多巴胺神经元中没有这些作用。因此,大鼠中记录的多巴胺能错误信号受经验性和推论性奖励预测的影响,并且推论性预测的效果取决于OFC。(PsycINFO数据库记录 相对于推论(非推论)试验,新的高价值线索在意料之外的奖励(或遗漏)的传递方面有所减少。在具有同侧OFC损伤的大鼠中记录的多巴胺神经元中没有这些作用。因此,大鼠中记录的多巴胺能错误信号受经验性和推论性奖励预测的影响,并且推论性预测的效果取决于OFC。(PsycINFO数据库记录
更新日期:2020-08-21
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