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Informatic parcellation of the network involved in the computation of subjective value

机译:主观价值计算中涉及的网络信息化

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Understanding how the brain computes value is a basic question in neuroscience. Although individual studies have driven this progress, meta-analyses provide an opportunity to test hypotheses that require large collections of data. We carry out a meta-analysis of a large set of functional magnetic resonance imaging studies of value computation to address several key questions. First, what is the full set of brain areas that reliably correlate with stimulus values when they need to be computed? Second, is this set of areas organized into dissociable functional networks? Third, is a distinct network of regions involved in the computation of stimulus values at decision and outcome? Finally, are different brain areas involved in the computation of stimulus values for different reward modalities? Our results demonstrate the centrality of ventromedial prefrontal cortex (VMPFC), ventral striatum and posterior cingulate cortex (PCC) in the computation of value across tasks, reward modalities and stages of the decision-making process. We also find evidence of distinct subnetworks of co-activation within VMPFC, one involving central VMPFC and dorsal PCC and another involving more anterior VMPFC, left angular gyrus and ventral PCC. Finally, we identify a posterior-to-anterior gradient of value representations corresponding to concreteto-abstract rewards.
机译:了解大脑如何计算价值是神经科学中的一个基本问题。尽管个别研究推动了这一进展,但荟萃分析为检验需要大量数据的假设提供了机会。我们对价值计算的大量功能磁共振成像研究进行了荟萃分析,以解决几个关键问题。首先,当需要计算刺激值时,与刺激值可靠相关的整个大脑区域是什么?第二,这组区域是否组织成可分离的功能网络?第三,决策和结果中刺激值的计算是否涉及一个独特的区域网络?最后,对于不同奖励方式,刺激值的计算中是否涉及不同的大脑区域?我们的研究结果表明腹侧前额叶皮层(VMPFC),腹侧纹状体和扣带后皮层(PCC)在跨任务,奖励方式和决策过程阶段的价值计算中具有中心地位。我们还发现在VMPFC内有不同的共同激活子网络的证据,一个涉及中央VMPFC和背侧PCC,另一个涉及更前面的VMPFC,左角回和腹侧PCC。最后,我们确定了对应于具体到抽象奖励的价值表示的从前到后的梯度。

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