Children's long-latency auditory event-related potential (LLAEP) structure differs from that of adults. Functional significance of childhood ERP components is largely unknown. In order to look for the functional correlates in adult and children's LLAEPs, stimulus-complexity effects were investigated in 8-10-year old children. To this end, auditory ERPs to vowels, acoustically matched complex tones, and sinusoidal tones were recorded. All types of stimuli elicited P100-N250-N450 ERP complex. Differences between the sinusoidal and complex tones were confined to the P100 and N250 peaks, complex tones eliciting larger responses. Vowels elicited smaller-amplitude N250 but larger-amplitude N450 than the complex tones. Some stimulus-complexity effects observed for N250 in children corresponded to those observed for the N1 in adults, whereas the N450 peak exhibited behaviour resembling that of the adult ERP components subsequent to the N1 wave.

译文

儿童的长潜伏期听觉事件相关电位 (LLAEP) 结构与成人不同。儿童ERP组件的功能意义在很大程度上是未知的。为了寻找成人和儿童LLAEPs的功能相关性,对8-10岁儿童的刺激复杂性影响进行了研究。为此,记录了听觉ERPs到元音,声学匹配的复杂音调和正弦音调。所有类型的刺激都P100-N250-N450 ERP复合体引起。正弦音调和复音之间的差异仅限于P100和N250峰,复音引起更大的响应。与复杂音调相比,元音引起的振幅N250较小,但振幅N450较大。在儿童中观察到的N250的一些刺激复杂性效应与在成人中观察到的N1的刺激复杂性效应相对应,而N450峰的行为类似于N1波之后的成人ERP组件的行为。

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