在前额叶皮层的自适应性安全编码
Sarah M Tashjian1,2, Joseph Cussen1, Wenning Deng2
1School of Psychological Sciences, University of Melbourne, Parkville, VIC 3052, Australia.
bioRxiv : the preprint server for biology
|August 2, 2024
概括
大脑通过整合外部威胁和自我保护能力来动态编码安全. 腹中前额叶皮层 (vmPFC) 在这个过程中发挥着关键作用,特别是保护如何影响安全感知.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 决策 决策 决策 决策 决策
背景情况:
- 自我保护依赖于区分安全与危险.
- 之前关于安全估计的研究忽视了自我保护能力.
- 大脑对安全的动态编码需要进一步的研究.
研究的目的:
- 为了研究在线安全的动态编码背后的神经系统.
- 检查大脑如何整合外部威胁和自我保护,以评估安全性.
- 测试安全估计的四个方面:安全预测,元表示,识别和值更新.
主要方法:
- 利用两个新的任务来实验性地操纵安全估计.
- 不同程度的外部威胁和自我保护,以评估其影响.
- 从两个独立样本收集数据:行为 (N=100) 和fMRI (N=30).
主要成果:
- 保护所赋予的对安全性的主观敏感性持续变化.
- 在腹中介前额叶皮层 (vmPFC) 中的神经反应跟踪了所有方面安全性增加.
- vmPFC显示了针对保护的特定调整,具有不同的威胁和保护编码枢纽.
结论:
- 腹中前额叶皮层 (vmPFC) 是编码安全的核心.
- 安全估计动态整合外部威胁和内部自我保护能力.
- 不同的vmPFC区域对安全的威胁和保护信息进行不同的处理.
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