在感知决策过程中优先处理社会威胁的神经处理
M El Zein1,2,3,4, R Mennella1,5, M Sequestro1
1Cognitive and Computational Neuroscience Laboratory (LNC), INSERM U960, DEC, Ecole Normale Supérieure, PSL University, 75005 Paris, France.
iScience
|June 4, 2024
概括
威胁检测受益于大脑更快的处理速度. 情绪刺激优先于非情绪刺激,影响与行动相关的大脑区域的感知决策和神经活动.
科学领域:
- 认知神经科学 认知神经科学
- 情绪的神经科学 情绪的神经科学
背景情况:
- 情绪信号,特别是威胁,在人类大脑中获得优先处理.
- 关于情感与非情感刺激的决定背后的神经计算尚未完全理解.
研究的目的:
- 研究与非情感刺激相比,与威胁相关的刺激有关的感知决策是否涉及不同的神经计算.
- 为了比较情绪与色彩检测的时间和神经相关性.
主要方法:
- 使用二维视觉刺激开发了一个新的行为范式.
- 参与者在相同的刺激上执行了单独的情绪和颜色检测任务.
- 使用脑电图 (EEG) 记录大脑活动并分析mu节奏 (10 Hz).
主要成果:
- 中心电极的脑电图 (EEG) 活动反映了感知证据,用于在刺激开始后大约100毫秒左右的情绪决策,但不是颜色.
- 参与者的选择更早地预测了情绪 (240毫秒),而不是色彩 (380毫秒) 通过与运动准备相关的mu节奏.
- 这些发现表明,与威胁相关的视觉信息具有优先级的神经编码.
结论:
- 关于与威胁相关的视觉刺激的感知决策是神经优先考虑的.
- 情绪决策比非情绪决策更早地参与与行动相关的大脑区域.
- 这支持了动机突出在处理社会相关信号中的作用.
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