Cycowicz Y M, Friedman D, Rothstein M
Cognitive Electrophysiology Laboratory, New York State Psychiatric Institute, New York 10032, USA.
Psychophysiology. 1996 Nov;33(6):680-90. doi: 10.1111/j.1469-8986.1996.tb02364.x.
Event-related potentials were recorded from participants 5-7, 9-11, 14-16, and 22-28 years old during an auditory novelty oddball task. In this task, stimuli about which the participant is not instructed (i.e., novel or uncategorized) typically elicit a more frontally oriented P3 scalp topography (novelty P3). In contrast, stimuli to which the participant must respond (i.e., target or precategorized) elicit a P3 with a more posterior scalp topography. Repetition of identical novel stimuli led to a similar reduction in novelty P3 amplitude for all age groups. Moreover, with repetition the shift in scalp topography of the novelty P3 to a more parietally oriented distribution was similar in children and adults. A second component, the P3(2) (assumed to be an analog of the P3b), exhibited a repetition priming effect in both the adults and the youngest children. The fact that age-related differences induced by novel repetition were small and not systematic indicates that the processing of novel information is similar across a wide age range.
在一项听觉新奇Oddball任务中，对5至7岁、9至11岁、14至16岁以及22至28岁的参与者记录了事件相关电位。在该任务中，未给予参与者指示的刺激（即新奇或未分类的刺激）通常会引发更偏向额叶的P3头皮地形图（新奇P3）。相比之下，参与者必须做出反应的刺激（即目标或预分类刺激）会引发头皮地形图更靠后的P3。所有年龄组中，相同新奇刺激的重复都会导致新奇P3波幅出现类似程度的降低。此外，随着重复，儿童和成人中新奇P3的头皮地形图向更偏向顶叶的分布转变情况相似。第二个成分，即P3(2)（假定为P3b的类似物），在成人和最小的儿童中均表现出重复启动效应。新奇刺激重复所导致的年龄相关差异较小且无系统性，这一事实表明，在很宽的年龄范围内，对新奇信息的处理是相似的。
