Hunter College, The City University of New York, NY 10065, United States.
Dev Cogn Neurosci. 2012 Jan;2(1):110-9. doi: 10.1016/j.dcn.2011.04.002.
The late positive potential (LPP) reflects increased attention to emotional versus neutral stimuli in adults. To date, very few studies have examined the LPP in children, and whether it can be used to measure patterns of emotional processing that are related to dispositional mood characteristics, such as temperamental fear and anxiety. To examine this question,39 typically developing 5–7 year olds (M age in months = 75.27, SD = 5.83) passively viewed complex emotional and neutral pictures taken from the International Affective Picture System.Maternal report of temperamental fear and anxiety was obtained and fearful behavior during an emotional challenge was observed. As documented in adults, LPP amplitudes to pleasant and unpleasant stimuli were larger than to neutral stimuli, although some gender differences emerged. Larger LPP amplitude differences between unpleasant and neutral stimuli were associated with greater observed fear. The LPP as a measure of individual differences in emotional processing is discussed.
晚正电位 (LPP) 反映了成年人对情绪刺激与中性刺激的注意力增加。迄今为止，很少有研究检查儿童的 LPP，也不知道它是否可以用于衡量与特质情绪特征（如气质性恐惧和焦虑）相关的情绪处理模式。为了检验这个问题，39 名典型的 5-7 岁发育正常的儿童（M 年龄以月计 = 75.27，SD = 5.83）被动观看了取自国际情感图片系统的复杂情绪和中性图片。获得了母亲对气质性恐惧和焦虑的报告，并观察了在情绪挑战期间的恐惧行为。如在成年人中记录的那样，愉快和不愉快刺激的 LPP 幅度大于中性刺激，尽管出现了一些性别差异。不愉快和中性刺激之间的 LPP 幅度差异越大，观察到的恐惧越大。LPP 作为情绪处理个体差异的衡量标准，这一问题正在讨论中。
