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Correlates of Auditory Decision-Making in Prefrontal, Auditory, and Basal Lateral Amygdala Cortical Areas
Journal of Neuroscience ( IF 4.4 ) Pub Date : 2021-02-10 , DOI: 10.1523/jneurosci.2217-20.2020
Julia L Napoli 1 , Corrie R Camalier 2 , Anna-Leigh Brown 1 , Jessica Jacobs 1 , Mortimer M Mishkin 1 , Bruno B Averbeck 2
Affiliation  

Spatial selective listening and auditory choice underlie important processes including attending to a speaker at a cocktail party and knowing how (or whether) to respond. To examine task encoding and the relative timing of potential neural substrates underlying these behaviors, we developed a spatial selective detection paradigm for monkeys, and recorded activity in primary auditory cortex (AC), dorsolateral prefrontal cortex (dlPFC), and the basolateral amygdala (BLA). A comparison of neural responses among these three areas showed that, as expected, AC encoded the side of the cue and target characteristics before dlPFC and BLA. Interestingly, AC also encoded the choice of the monkey before dlPFC and around the time of BLA. Generally, BLA showed weak responses to all task features except the choice. Decoding analyses suggested that errors followed from a failure to encode the target stimulus in both AC and dlPFC, but again, these differences arose earlier in AC. The similarities between AC and dlPFC responses were abolished during passive sensory stimulation with identical trial conditions, suggesting that the robust sensory encoding in dlPFC is contextually gated. Thus, counter to a strictly PFC-driven decision process, in this spatial selective listening task AC neural activity represents the sensory and decision information before dlPFC. Unlike in the visual domain, in this auditory task, the BLA does not appear to be robustly involved in selective spatial processing.

SIGNIFICANCE STATEMENT We examined neural correlates of an auditory spatial selective listening task by recording single-neuron activity in behaving monkeys from the amygdala, dorsolateral prefrontal cortex, and auditory cortex. We found that auditory cortex coded spatial cues and choice-related activity before dorsolateral prefrontal cortex or the amygdala. Auditory cortex also had robust delay period activity. Therefore, we found that auditory cortex could support the neural computations that underlie the behavioral processes in the task.



中文翻译:

前额叶、听觉和基底外侧杏仁核皮质区听觉决策的相关性

空间选择性聆听和听觉选择是重要过程的基础,包括在鸡尾酒会上出席演讲者并知道如何(或是否)做出回应。为了检查任务编码和这些行为背后潜在神经底物的相对时间,我们为猴子开发了一种空间选择性检测范式,并记录了初级听觉皮层 (AC)、背外侧前额叶皮层 (dlPFC) 和基底外侧杏仁核 (BLA) 的活动)。这三个区域之间神经反应的比较表明,正如预期的那样,AC 在 dlPFC 和 BLA 之前编码了线索和目标特征的侧面。有趣的是,AC 还在 dlPFC 之前和 BLA 前后编码了猴子的选择。一般来说,BLA 对除选择之外的所有任务特征都表现出较弱的反应。解码分析表明错误是由于未能在 AC 和 dlPFC 中对目标刺激进行编码,但同样,这些差异在 AC 中较早出现。AC 和 dlPFC 反应之间的相似性在具有相同试验条件的被动感官刺激期间被废除,这表明 dlPFC 中强大的感官编码是上下文门控的。因此,与严格的 PFC 驱动的决策过程相反,在这个空间选择性聆听任务中,AC 神经活动代表了 dlPFC 之前的感觉和决策信息。与视觉领域不同的是,在这个听觉任务中,BLA 似乎没有强有力地参与选择性空间处理。AC 和 dlPFC 反应之间的相似性在具有相同试验条件的被动感官刺激期间被废除,这表明 dlPFC 中强大的感官编码是上下文门控的。因此,与严格的 PFC 驱动的决策过程相反,在这个空间选择性聆听任务中,AC 神经活动代表了 dlPFC 之前的感觉和决策信息。与视觉领域不同的是,在这个听觉任务中,BLA 似乎没有强有力地参与选择性空间处理。AC 和 dlPFC 反应之间的相似性在具有相同试验条件的被动感官刺激期间被废除,这表明 dlPFC 中强大的感官编码是上下文门控的。因此,与严格的 PFC 驱动的决策过程相反,在这个空间选择性聆听任务中,AC 神经活动代表了 dlPFC 之前的感觉和决策信息。与视觉领域不同的是,在这个听觉任务中,BLA 似乎没有强有力地参与选择性空间处理。

重要性声明我们通过记录来自杏仁核、背外侧前额叶皮层和听觉皮层的行为猴子的单神经元活动,检查了听觉空间选择性聆听任务的神经相关性。我们发现听觉皮层在背外侧前额叶皮层或杏仁核之前编码空间线索和选择相关的活动。听觉皮层也有很强的延迟期活动。因此,我们发现听觉皮层可以支持作为任务中行为过程基础的神经计算。

更新日期:2021-02-10
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