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根据杏仁体活动的社会风险编码以及与背前皮层的连接.

Jae-Chang Kim1, Leopold Zangemeister2, Philippe N Tobler1,3

  • 1Zurich Center for Neuroeconomics, Department of Economics, University of Zurich, Zurich 8006, Switzerland.

The Journal of neuroscience : the official journal of the Society for Neuroscience
|November 26, 2024
PubMed
概括

杏仁体将社会风险与非社会风险分开处理,其活动随着社会奖励变异而增加. 对社会风险的强烈厌恶与杏仁体和背部前带带皮层 (dACC) 之间的合减少有关.

关键词:
阿米格达拉的桃体中部前额叶皮层中部前额叶皮层危险的风险 危险的风险我们的社会社会社会社会.

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科学领域:

  • 神经科学是一个神经科学.
  • 社会心理学 社会心理学
  • 决策科学 决策科学 决策科学

背景情况:

  • 风险对经济决策至关重要,但其在社会环境中的神经基础仍然不清楚.
  • 杏仁体和背部前带状皮层 (dACC) 参与了冒险行为.
  • 了解社会风险处理对于理解人类经济行为至关重要.

研究的目的:

  • 用fMRI研究风险,定义为奖励概率差异,如何影响社会背景下的决策和神经活动.
  • 探索社会风险厌恶的神经相关性及其与决策的关系.
  • 为了确定大脑中的社会风险处理与非社会风险处理是否不同.

主要方法:

  • 功能磁共振成像 (fMRI) 用于测量20名人类志愿者的大脑活动.
  • 参与者做出了涉及社会和非社会结果的决定,奖励概率各不相同.
  • 一个类似贝克尔-德格鲁特-马尔沙克拍卖的程序估计了参与者对社会风险的厌恶.

主要成果:

  • 杏仁体显示了社会和非社会风险的明显信号,在两个领域的奖励差异随之增加.
  • 75%的参与者表现出对社会风险的厌恶.
  • 更大的社会风险厌恶与杏仁体和DACC之间的功能合减少有关,特别是在社会风险方面.

结论:

  • 杏仁体及其与DACC的合参与处理客观和主观的社会风险.
  • 社会风险在杏仁体内与非社会风险分别处理.
  • 研究结果表明,与非社会风险相比,社会风险评估的神经机制是独立的,尽管理论框架使它们保持一致.