Do animals and furniture items elicit different brain responses in human infants?
Do animals and furniture items elicit different brain responses in human infants?
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DOI：
10.1016/j.braindev.2009.11.010
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发表时间：
2010-11-01
影响因子：
1.7
通讯作者：
Pauen, Sabina
中科院分区：
文献类型：
--
作者：
Jeschonek, Susanna;Marinovic, Vesna;Pauen, Sabina
前语言婴儿最早作出的范畴区分之一是有生命-无生命的区分。为了探索这种区别在7-8个月大的神经基础，相同数量的动物和家具图片中的ERP范式。总共118张图片，看起来彼此不同，以半随机顺序呈现，每张1000 ms。婴儿的大脑反应，从两个类别的样本系统不同的负中央组成部分（Nc：400-600毫秒）在前通道。更具体地，Nc在一个婴儿亚组中对于动物增强，并且在另一个婴儿亚组中对于家具物品增强。探索性分析相关的分类启动进一步揭示了特定类别的差异，在大脑反应的后期时间窗口（650-1550毫秒）在右额叶通道：未启动的刺激（之前由一个不同的类别项目）引起了更积极的反应相比，启动的刺激（之前由一个相同的类别项目）。总之，这些研究结果表明，婴儿的大脑区分样本从两个全球域。鉴于我们的任务的设计，我们得出结论，类别识别的过程更有可能占我们的研究结果比过程中的在线类别形成的实验会议。(C)2009爱思唯尔有限公司版权所有。
One of the earliest categorical distinctions to be made by preverbal infants is the animate-inanimate distinction. To explore the neural basis for this distinction in 7-8-month-olds, an equal number of animal and furniture pictures was presented in an ERP-paradigm. The total of 118 pictures, all looking different from each other, were presented in a semi-randomized order for 1000 ms each. Infants' brain responses to exemplars from both categories differed systematically regarding the negative central component (Nc: 400-600 ms) at anterior channels. More specifically, the Nc was enhanced for animals in one subgroup of infants, and for furniture items in another subgroup of infants. Explorative analyses related to categorical priming further revealed category-specific differences in brain responses in the late time window (650-1550 ms) at right frontal channels: Unprimed stimuli (preceded by a different-category item) elicited a more positive response as compared to primed stimuli (preceded by a same-category item). In sum, these findings suggest that the infant's brain discriminates exemplars from both global domains. Given the design of our task, we conclude that processes of category identification are more likely to account for our findings than processes of on-line category formation during the experimental session. (C) 2009 Elsevier B.V. All rights reserved.