Barry Robert J, De Blasio Frances M, Borchard Jay P
Centre for Psychophysics, Psychophysiology, and Psychopharmacology, Brain & Behaviour Research Institute, and School of Psychology, University of Wollongong, Wollongong 2522, Australia.
Centre for Psychophysics, Psychophysiology, and Psychopharmacology, Brain & Behaviour Research Institute, and School of Psychology, University of Wollongong, Wollongong 2522, Australia.
Clin Neurophysiol. 2014 Oct;125(10):1995-2006. doi: 10.1016/j.clinph.2014.02.018. Epub 2014 Feb 28.
To compare sequential processing in the unwarned auditory equiprobable Go/NoGo task in children and adults, in the context of a recently developed adult schema.
Adult and child samples completed an equiprobable auditory Go/NoGo task while EEG was recorded from 19 channels. Go and NoGo ERPs were decomposed using unrestricted Varimax-rotated PCAs for the groups separately, and in combination. The separate adult and child components were compared using the Congruence Coefficient. Brain sources of each assessed component were examined using eLORETA.
Corresponding adult/child components were tentatively identified: two N1 subcomponents (N1-1, PN) and P2, followed by N2, P3 (separate P3a/P3b in children), the classic Slow Wave (SW), and a diffuse Late Positivity (LP). While early and late components showed similarities, the intermediate P2 and N2 differed substantially in their stimulus effects.
Aspects of "Go" vs. "NoGo" categorisation differ between adults and children, but subsequent processing reflected in the different Go/NoGo P3 components, and their sequellae, are similar.
This is the first detailed examination of child responses in this paradigm. The tested schema appears relatively robust in adults, and the child results may aid our understanding of developmental aspects of cognitive processing in normal and atypical individuals.
在最近开发的成人模式背景下,比较儿童和成人在未预警的听觉等概率Go/NoGo任务中的序列加工。
成人和儿童样本完成等概率听觉Go/NoGo任务,同时从19个通道记录脑电图。分别对两组以及合并后的Go和NoGo事件相关电位(ERP)使用无约束Varimax旋转主成分分析(PCA)进行分解。使用一致性系数比较成人和儿童各自的成分。使用eLORETA检查每个评估成分的脑源。
初步确定了相应的成人/儿童成分:两个N1子成分(N1-1、PN)和P2,随后是N2、P3(儿童中有单独的P3a/P3b)、经典慢波(SW)和弥漫性晚期正波(LP)。虽然早期和晚期成分显示出相似性,但中间的P2和N2在刺激效应上有很大差异。
成人和儿童在“Go”与“NoGo”分类方面存在差异,但不同的Go/NoGo P3成分及其后续反应所反映的后续加工是相似的。
这是对该范式中儿童反应的首次详细研究。所测试的模式在成人中似乎相对稳健,儿童的研究结果可能有助于我们理解正常和非典型个体认知加工的发展方面。