Cortical specialisation for face processing: face-sensitive event-related potential components in 3-and 12-month-old infants
Cortical specialisation for face processing: face-sensitive event-related potential components in 3-and 12-month-old infants
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DOI：
10.1016/s1053-8119(03)00076-4
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发表时间：
2003-07-01
期刊：
影响因子：
5.7
通讯作者：
Johnson, MH
中科院分区：
文献类型：
--
作者：
Halit, H;de Haan, M;Johnson, MH
成年人的N170被认为是面部处理的专门机制的电生理标志物，但对其发育起源知之甚少。先前的工作已经确定了两个面部敏感的婴儿ERP组件（N290和P400）（J. Cog. Neurosci. 14（2002），199）。在本研究中，我们评估了特异性（直立人脸），这些婴儿组件在3个月和12个月。在12个月时，在两种组分中观察到的特异性程度与在成人N170中观察到的相似。相比之下，在3个月大时，N290和P400对人脸的特异性并未表现出与12个月大时观察到的相同水平。我们的研究结果表明：（1）在发育过程中，这两种面部敏感成分对直立人脸的特异性都有所增加;（2）成年N170不是由单一的发育前体先于出现，而是两种功能和形态上不同的成分（N290和P400）整合的结果。(C)2003 Elsevier Science（美国）。All rights reserved.
The adult N170 is considered to be an electrophysiological marker of specialised mechanisms for face processing, but little is known about its developmental origin. Previous work has identified two face-sensitive infant ERP components (N290 and P400) (J. Cog. Neurosci. 14 (2002), 199). In the present study, we assessed the specificity (to upright human faces) of these infant components at 3 and 12 months. At 12 months the degree of specificity observed in both components was similar to that seen in the adult N170. In contrast, at 3 months of age the N290 and P400 did not show the same level of specificity for human faces as that observed at 12 months. Our findings suggest that (1) both face-sensitive components increase in their specificity for upright human faces during development, and (2) the adult N170 is not preceded by a single developmental precursor, but rather emerges as a consequence of the integration of two functionally and morphologically distinct components (N290 and P400). (C) 2003 Elsevier Science (USA). All rights reserved.