社会压力增强男性的直观亲社会行为,同时破坏自我奖励处理:来自行为,计算和神经成像研究的证据
Kun Il Kim1, Jeung-Hyun Lee2, Woo-Young Ahn3
1School of Psychology, Korea University, Seoul, Republic of Korea, 02841.
NeuroImage
|May 17, 2025
概括
社会压力通过改变大脑中的价值处理来提高直观的亲社会行为. 皮质醇水平升高会增加对其他人的选择,影响中间前额叶皮层 (mPFC) 的活动.
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:
- 压力显著影响人类的决策,但它对亲社会行为的确切影响仍在争论中.
- 了解压力引起的价值观选择变化背后的神经机制至关重要.
研究的目的:
- 研究社会压力如何影响直观的亲社会价值处理和自我奖励处理.
- 阐明与压力调节的亲社会决策相关的神经相关物和连接模式.
主要方法:
- 在社会压力下测量货币奖励选择的行为实验.
- 神经成像技术 (fMRI) 来分析大脑活动,特别是在中间前额叶皮层 (mPFC).
- 计算建模和调解/连接分析,以探索神经通路.
主要成果:
- 压力后皮质醇水平升高与更倾向于选择不利的不平等选择相关.
- 观察到,腹部mPFC中的"其他"奖励编码增加,背部mPFC中的编码减少.
- 皮质醇调节皮质-状环,通过腹状状体激发背部mPFC,并通过背部状体抑制它.
结论:
- 社会压力扰乱了深思熟虑的决策,同时增强了直观的亲社会动机.
- 层次组织的皮质-状回路的差分调制是对亲社会性的压力影响的基础.
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