慢性压力可能会放大杏仁体对模两可的情绪刺激反应的性别/性别差异
Tierney Lorenz1,2, Nicholas Harp3, Jordan E Pierce1,2
1Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA.
概括
慢性压力可能会改变大脑对模两可的情感面孔的反应,男性和女性的不同. 研究结果表明,压力会放大现有的情绪偏见,而不是普遍增加负面情绪.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 心理学 心理学 心理学
背景情况:
- 对模两可的情绪刺激的高反应性是精神病理学的危险因素.
- 女性对模两可的刺激表现出更大的杏仁体激活,情绪障碍的风险更高.
- 性别/性别差异存在于压力对情绪处理和调节的影响.
研究的目的:
- 研究慢性压力和性/性别对杏仁核对模两可的情绪刺激的反应性的相互作用.
- 测试慢性压力是否会放大杏仁体激活到模两可的面孔,特别是在女性身上.
- 探索与压力相关的神经反应对情感模两可的性别/性别差异.
主要方法:
- 功能神经成像 (fMRI) 用于测量297名健康参与者 (6-75岁) 的杏仁体活动.
- 使用两个基于唾液的生物标志物来评估慢性压力:爱斯坦-巴尔病毒 (EBV) 表达和乳杆菌多样性.
- 参与者在扫描期间观看了情感面部刺激,包括惊的面部.
主要成果:
- 在女性中,较高的慢性压力表现出一种非显著的趋势,即对模两可的刺激更大的杏仁体激活.
- 与预测相反,患有较高慢性压力的男性对模两可的刺激表现出较低的杏仁体激活.
- 这些模式在杏仁体和两种压力测量方法中都是一致的.
结论:
- 研究结果表明,慢性压力如何影响神经对情绪模两可的反应,存在性别差异.
- 压力可能会放大先前存在的情绪偏见,而不是普遍增加负面情绪.
- 需要进一步的研究来复制和理解这些关于压力,性别和情绪处理的初步发现.
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