MacNamara Annmarie, Vergés Alvaro, Kujawa Autumn, Fitzgerald Kate D, Monk Christopher S, Phan K Luan
Department of Psychiatry, University of Illinois at Chicago, Chicago, IL.
Department of Psychiatry, University of Michigan, Ann Arbor, MI.
Dev Psychobiol. 2016 Jan;58(1):27-38. doi: 10.1002/dev.21341. Epub 2015 Jul 29.
Socio-emotional processing is an essential part of development, and age-related changes in its neural correlates can be observed. The late positive potential (LPP) is a measure of motivated attention that can be used to assess emotional processing; however, changes in the LPP elicited by emotional faces have not been assessed across a wide age range in childhood and young adulthood. We used an emotional face matching task to examine behavior and event-related potentials (ERPs) in 33 youth aged 7-19 years old. Younger children were slower when performing the matching task. The LPP elicited by emotional faces but not control stimuli (geometric shapes) decreased with age; by contrast, an earlier ERP (the P1) decreased with age for both faces and shapes, suggesting increased efficiency of early visual processing. Results indicate age-related attenuation in emotional processing that may stem from greater efficiency and regulatory control when performing a socio-emotional task.
社会情感加工是发展的重要组成部分，并且可以观察到其神经关联中与年龄相关的变化。晚期正电位（LPP）是一种动机性注意的测量指标，可用于评估情绪加工；然而，在儿童期和青年期的广泛年龄范围内，情绪面孔引发的LPP变化尚未得到评估。我们使用情绪面孔匹配任务来检查33名7至19岁青少年的行为和事件相关电位（ERP）。年幼的儿童在执行匹配任务时速度较慢。情绪面孔而非对照刺激（几何形状）引发的LPP随年龄增长而降低；相比之下，早期ERP（P1）在面孔和形状上均随年龄增长而降低，表明早期视觉加工效率提高。结果表明，社会情感任务执行过程中效率和调节控制的提高可能导致情绪加工中与年龄相关的衰减。
