基于模型的学习如何影响风险承担的神经基础:右小脑和左尾状神经之间的功能耦合。

IF 2.2 3区 心理学 Q3 NEUROSCIENCES
Hangfeng Huo , Elise Lesage , Wenshan Dong , Tom Verguts , Carol A. Seger , Sitong Diao , Tingyong Feng , Qi Chen
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引用次数: 0

摘要

更高的执行控制能力使人们能够适当地评估风险,避免过度的风险规避和过度的冒险行为。执行功能和风险承担之间这种关系的神经机制仍然未知。我们使用基于体素的形态计量学(VBM)分析与静息状态功能连接(rs-FC)相结合来评估执行功能的一个组成部分,即基于模型的学习,与风险承担之间的关系。我们用两步任务测量了个人对基于模型的学习系统的使用情况,用气球模拟风险任务测量了他们的风险承担情况。行为结果表明,风险承担与基于模型的权重参数ω呈正相关。VBM结果显示,基于模型的学习与右小脑(RCere)和左顶叶下小叶(LIPL)的灰质体积呈正相关。功能连接结果表明,RCere和左尾状核(LCAU)之间的耦合与基于模型的学习和风险承担相关。中介分析表明,RCere-LCAU功能连接完全中介了基于模型的学习对风险承担的影响。这些结果表明,支持基于模型的策略的学习者也通过基于奖励的学习、基于错误的学习和尾状、小脑和顶叶网络提供的执行控制之间的互动,参与更合适的风险行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The neural substrates of how model-based learning affects risk taking: Functional coupling between right cerebellum and left caudate

Higher executive control capacity allows people to appropriately evaluate risk and avoid both excessive risk aversion and excessive risk-taking. The neural mechanisms underlying this relationship between executive function and risk taking are still unknown. We used voxel-based morphometry (VBM) analysis combined with resting-state functional connectivity (rs-FC) to evaluate how one component of executive function, model-based learning, relates to risk taking. We measured individuals’ use of the model-based learning system with the two-step task, and risk taking with the Balloon Analogue Risk Task. Behavioral results indicated that risk taking was positively correlated with the model-based weighting parameter ω. The VBM results showed a positive association between model-based learning and gray matter volume in the right cerebellum (RCere) and left inferior parietal lobule (LIPL). Functional connectivity results suggested that the coupling between RCere and the left caudate (LCAU) was correlated with both model-based learning and risk taking. Mediation analysis indicated that RCere-LCAU functional connectivity completely mediated the effect of model-based learning on risk taking. These results indicate that learners who favor model-based strategies also engage in more appropriate risky behaviors through interactions between reward-based learning, error-based learning and executive control subserved by a caudate, cerebellar and parietal network.

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来源期刊
Brain and Cognition
Brain and Cognition 医学-神经科学
CiteScore
4.60
自引率
0.00%
发文量
46
审稿时长
6 months
期刊介绍: Brain and Cognition is a forum for the integration of the neurosciences and cognitive sciences. B&C publishes peer-reviewed research articles, theoretical papers, case histories that address important theoretical issues, and historical articles into the interaction between cognitive function and brain processes. The focus is on rigorous studies of an empirical or theoretical nature and which make an original contribution to our knowledge about the involvement of the nervous system in cognition. Coverage includes, but is not limited to memory, learning, emotion, perception, movement, music or praxis in relationship to brain structure or function. Published articles will typically address issues relating some aspect of cognitive function to its neurological substrates with clear theoretical import, formulating new hypotheses or refuting previously established hypotheses. Clinical papers are welcome if they raise issues of theoretical importance or concern and shed light on the interaction between brain function and cognitive function. We welcome review articles that clearly contribute a new perspective or integration, beyond summarizing the literature in the field; authors of review articles should make explicit where the contribution lies. We also welcome proposals for special issues on aspects of the relation between cognition and the structure and function of the nervous system. Such proposals can be made directly to the Editor-in-Chief from individuals interested in being guest editors for such collections.
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