老龄化变异处理和识别面部表情:对可能的神经机制的洞察力
Francesca Ginatempo1, Nicola Loi1, Mohammed Zeroual1
1Department of Biomedical Sciences, University of Sassari, Sassari, Italy.
Journal of neurophysiology
|July 1, 2025
概括
老龄化通过改变视觉注意力,特别是对悲伤的表情,损害了面部表情识别. 老年人对悲伤的面孔的注意力减少,这与大脑活动的变化和较差的识别能力有关.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 人类衰老研究研究
背景情况:
- 面部表情识别对于社交互动至关重要.
- 衰老会影响各种认知功能,包括视觉处理和注意力.
- 了解面部处理中的与年龄相关的变化对于认知健康至关重要.
研究的目的:
- 研究老化如何影响面部表情处理的不同阶段.
- 检查与年龄相关的固定模式,感知,运动反应和识别的差异.
- 探索与年龄相关的面部处理变化背后的神经机制.
主要方法:
- 在年轻和老年人中比较固定模式,事件相关潜力 (P100,N170) 和运动皮层刺激性 (SICI,ICF).
- 评估了中性,快乐和悲伤的面孔的识别准确性和响应时间.
- 利用了被动观看任务和电生理学记录.
主要成果:
- 老年人表现出改变的固定模式,更多地关注嘴巴,并显示延迟N170潜伏.
- 老年人表现出悲伤面孔的P100振幅降低,面部运动皮层的刺激性增加.
- 年轻的成年人具有更高的识别准确度和更快的响应时间,特别是对于悲伤的表情,SICI与对悲伤的面孔的识别有负相关.
结论:
- 老龄化显著改变了面部表情的处理,减少了对悲伤面部的视觉注意力.
- 面部运动皮层的兴奋性增加和皮层内抑制的减少与老年人对悲伤表情的识别受损有关.
- 这些发现突出了与年龄相关的社会认知认知衰退,并提供了对神经机制的见解.
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