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Investigating Age-Related Neural Compensation During Emotion Perception Using Electroencephalography

机译：使用脑电图研究情绪感知过程中与年龄有关的神经补偿

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Previous research suggests declines in emotion perception in older as compared to younger adults, but the underlying neural mechanisms remain unclear. Here, we address this by investigating how “face-age” and “face emotion intensity” affect both younger and older participants’ behavioural and neural responses using event-related potentials (ERPs). Sixteen young and fifteen older adults viewed and judged the emotion type of facial images with old or young face-age and with high- or low- emotion intensities while EEG was recorded. The ERP results revealed that young and older participants exhibited significant ERP differences in two neural clusters: the left frontal and centromedial regions (100–200 ms stimulus onset) and frontal region (250–900 ms) when perceiving neutral faces. Older participants also exhibited significantly higher ERPs within these two neural clusters during anger and happiness emotion perceptual tasks. However, while this pattern of activity supported neutral emotion processing, it was not sufficient to support the effective processing of facial expressions of anger and happiness as older adults showed reductions in performance when perceiving these emotions. These age-related changes are consistent with theoretical models of age-related changes in neurocognitive abilities and may reflect a general age-related cognitive neural compensation in older adults, rather than a specific emotion-processing neural compensation.
机译：先前的研究表明，与年轻人相比，老年人的情绪感知能力下降，但潜在的神经机制仍不清楚。在这里，我们通过研究“面部年龄”和“面部情绪强度”如何利用事件相关电位（ERP）来影响年轻和老年参与者的行为和神经反应，从而解决这一问题。记录脑电图时，有16名年轻人和15名老年人查看并判断了具有老年或年轻面孔年龄，高或低情感强度的面部图像的情感类型。 ERP的结果显示，年轻和年长的参与者在感知中性面孔时在两个神经簇中表现出显着的ERP差异：左额叶和中央区（100-200 ms刺激发作）和额叶区（250-900 ms）。较年长的参与者在愤怒和幸福情绪感知任务中，在这两个神经簇内的ERPs也显着提高。然而，尽管这种活动模式支持中性的情绪处理，但不足以支持对愤怒和幸福的面部表情的有效处理，因为老年人在感知这些情绪时表现出了降低的表现。这些与年龄相关的变化与神经认知能力中与年龄相关的变化的理论模型一致，并且可能反映了老年人的一般与年龄相关的认知神经补偿，而不是特定的情绪处理神经补偿。

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