Jones Emily J H, Venema Kaitlin, Lowy Rachel, Earl Rachel K, Webb Sara Jane
Center for Brain & Cognitive Development School of Psychology, Birkbeck, University of London, London, United Kingdom, WC1E 7HX.
Palo Alto University, Palo Alto, CA.
Dev Psychobiol. 2015 Nov;57(7):842-53. doi: 10.1002/dev.21336. Epub 2015 Jul 29.
Between 6 and 12 months, typically developing infants undergo a socio-cognitive "revolution." The Interactive Specialization (IS) theory of brain development predicts that these behavioral changes will be underpinned by developmental increases in the power and topographic extent of socially selective cortical responses. To test this hypothesis, we used EEG to examine developmental changes in cortical selectivity for ecologically valid dynamic social versus non-social stimuli in a large cohort of 6- and 12-month-old infants. Consistent with the Interactive Specialization model, results showed that differences in EEG Θ activity between social and non-social stimuli became more pronounced and widespread with age. Differences in EEG activity were most clearly elicited by a live naturalistic interaction, suggesting that measuring brain activity in ecologically valid contexts is central to mapping social brain development in infancy.
在6至12个月大时，发育正常的婴儿会经历一场社会认知“革命”。大脑发育的交互式特化（IS）理论预测，这些行为变化将由社会选择性皮层反应的能力和地形范围的发育性增加所支撑。为了验证这一假设，我们使用脑电图来检查一大群6个月和12个月大婴儿对生态有效动态社会刺激与非社会刺激的皮层选择性的发育变化。与交互式特化模型一致，结果表明，随着年龄的增长，社会刺激和非社会刺激之间脑电图θ活动的差异变得更加明显和广泛。脑电图活动的差异最明显地由自然主义的实时互动引发，这表明在生态有效情境中测量大脑活动对于描绘婴儿期社会大脑发育至关重要。
