Segregation, connectivity, and gradients of deactivation in neural correlates of evidence in social decision making,NeuroImage

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Segregation, connectivity, and gradients of deactivation in neural correlates of evidence in social decision making
NeuroImage ( IF 4.7 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.neuroimage.2020.117339
Roberto Viviani ₁ , Lisa Dommes ₂ , Julia E Bosch ₂ , Karin Labek ₃

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Functional imaging studies of sensory decision making have detected a signal associated with evidence for decisions that is consistent with data from single-cell recordings in laboratory animals. However, the generality of this finding and its implications on our understanding of the organization of the fMRI signal are not clear. In the present functional imaging study, we investigated decisions in an elementary social cognition domain to identify the neural correlates of evidence, their segregation, connectivity, and their relationship to task deactivations. Besides providing data in support of an evidence-related signal in a social cognition task, we were interested in embedding these neural correlates in models of supramodal associative cortex placed at the top of a hierarchy of processing areas. Participants were asked to decide which of two depicted individuals was saddest based on information rich in sensory features (facial expressions) or through contextual cues suggesting the mental state of others (stylized drawings of mourning individuals). The signal associated with evidence for the decision was located in two distinct networks differentially recruited depending on the information type. Using the largest peaks of the signal associated with evidence as seeds in a database of connectivity data, these two networks were retrieved. Furthermore, the hubs of these networks were located near or along a ribbon of cortex located between task activations and deactivations between areas affected by perceptual priming and the deactivated areas of the default network system. In associative cortex, these findings suggest gradients of progressive relative deactivation as a possible neural correlate of the cortical organization envisaged by structural models of cortical organization and by predictive coding theories of cortical function.

中文翻译：

社会决策中证据的神经关联中的分离、连通性和失活梯度

感官决策的功能成像研究检测到与决策证据相关的信号，该信号与实验室动物单细胞记录的数据一致。然而，这一发现的普遍性及其对我们对 fMRI 信号组织理解的影响尚不清楚。在目前的功能成像研究中，我们调查了基本社会认知领域中的决策，以确定证据的神经相关性、它们的分离、连通性以及它们与任务停用的关系。除了在社会认知任务中提供支持证据相关信号的数据外，我们还有兴趣将这些神经关联物嵌入位于处理区域层次结构顶部的超模态联想皮层模型中。参与者被要求根据丰富的感官特征信息（面部表情）或通过暗示他人精神状态的上下文线索（哀悼者的程式化图画）来决定描绘的两个人中的哪一个最悲伤。与决策证据相关的信号位于两个不同的网络中，根据信息类型不同而不同。使用与证据相关的信号的最大峰值作为连接数据数据库中的种子，检索这两个网络。此外，这些网络的中枢位于受感知启动影响的区域与默认网络系统的停用区域之间的任务激活和去激活之间的皮层带附近或沿线。在联想皮层中，

更新日期：2020-12-01

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