任务时间的功能成像和习惯性被动暴露在有情绪表达的脸上
Karin Labek1, Roberto Viviani1,2
1Institute of Psychology, University of Innsbruck, Innsbruck, Austria.
Neuroreport
|February 20, 2025
概括
对负面情绪面孔的重复暴露会导致杏仁体的习惯和皮质网络活动的减少,影响社会认知和注意力.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 情感神经科学是一种神经科学.
背景情况:
- 已知杏仁体会对情绪刺激做出反应,并习惯于重复暴露.
- 对持续的情绪刺激和任务时间效应的皮层反应的理解较少.
研究的目的:
- 识别神经基质在反复被动接触负面情感面孔时表现出习惯或活动减少.
- 调查皮质区域处理情绪刺激的任务时间效应.
主要方法:
- 运用功能神经成像技术来监测脑部活动,在一个任务,涉及反复被动观看负面情绪的面孔.
- 随着时间的推移,分析了杏仁体和皮质网络中神经活动的变化.
主要成果:
- 观察到杏仁体习惯,特别是在中央核和延伸到后部,与减少的动机和注意力反应相关.
- 皮质活动随着时间的推移在一个网络中下降,包括关节,后区域和腹中前额叶皮质.
- 这些皮质变化发生在从任务激活到关闭的过渡时,这表明它在表示输入内容方面发挥了作用.
结论:
- 杏仁体和特定皮质网络中的习惯反映了大脑对重复的情绪刺激的适应.
- 皮层网络的变化与参与社会认知的变化相似,表明它在开发基于任务的表示中发挥了作用.
- 研究结果强调了在情感面部处理过程中,杏仁体和皮质中存在不同的但互补的习惯模式.
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