Stimulus probability and event-related potentials of the brain in 6-month-old human infants: a parametric study
Stimulus probability and event-related potentials of the brain in 6-month-old human infants: a parametric study
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DOI：
10.1016/s0167-8760(98)00013-0
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发表时间：
1998-07-01
影响因子：
3
通讯作者：
Cook, KG
中科院分区：
文献类型：
--
作者：
Ackles, PK;Cook, KG
研究了先验刺激概率和局部刺激序列对6组6月龄婴儿事件相关脑电位的Nc、NSW和Pc分量的影响。通过对Nc、NSW和Pc组成部分的记忆、期望和注意预测进行检验，使用婴儿控制古怪球范式，在该范式中，视觉刺激以0.90/0.10、0.80/0.20、0.70/0.30、0.60/0.40、0.50/0.50（交替）和0.50/0.50（随机）概率呈现在各组中。主要结果表明，刺激概率和局部刺激序列对Nc振幅和潜伏期、NSW振幅有影响，但对Pc分量没有影响。同时注视表现也受到刺激概率的影响。结果讨论了从记忆，预期和婴儿后期成分的注意帐户的预测。(C) 1998爱思唯尔科学有限公司
The effects of a priori stimulus probability and local-stimulus sequences on the Nc, NSW and Pc components of the event-related brain potentials were studied in six groups of 6-month-old human infants. Predictions from memory, expectancy and attentional accounts of the Nc, NSW and Pc components were examined using an infant-control oddball paradigm in which visual stimuli were presented across groups, at 0.90/0.10, 0.80/0.20, 0.70/0.30, 0.60/0.40, 0.50/0.50 (alternation) and 0.50/0.50 (random) probabilities. The main results indicated that stimulus probabilities and local-stimulus sequences affected Nc amplitude and latency, NSW amplitude but not the Pc component. Concurrent visual fixation performance was also found to be influenced by stimulus probabilities. The results were discussed in terms of the predictions from memory, expectancy and attentional accounts of the infant late components. (C) 1998 Elsevier Science B.V.