Changes in the late task-related brain potentials during adolescence.
Changes in the late task-related brain potentials during adolescence.
复制标题
青春期后期与任务相关的大脑电位的变化。
DOI：
10.1111/j.1749-6632.1984.tb23554.x
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发表时间：
1984
影响因子：
5.2
通讯作者：
Erlenmeyer-Kimling,L
中科院分区：
文献类型：
--
作者：
Friedman,D;Brown3rd,C;Cornblatt,B;VaughanJr,HG;Erlenmeyer-Kimling,L
70名儿童（年龄11-18岁）被分为6个年龄组，研究一个较长的潜伏期波形，慢波（SW），在整个发展跨度的加工策略是已知的发生。在每个试验组中，发生了3个事件：频繁的音调，发生率为66%;从标准频率的音高变化（PC）;和刺激遗漏（MS），发生率为17%。使用耳机双耳呈现刺激，并且刺激间隔为800毫秒。学生对其中一个不常见的事件做出反应，手指抬起激活了RT键。在任何给定的块的试验中，Ss被指示尽可能快地响应PC或MS。EEG，EOG和RT被记录，并对PC的平均事件相关电位进行了分析。研究结果表明，内源性成分的振幅的相关变量和头皮位置的关系是一致的，与以前的研究使用类似的任务与成人的Ss。随着年龄的增长，N250或P350潜伏期或RT没有明显变化，表明决策和刺激评估时间在不同年龄段相似。有一个整体的负性（N250，P350，和SW）观察CA的增加减少，这表明潜在的转变早在250毫秒刺激后开始。看来SW是这种转变的根源。(33参考）（PsycINFO数据库记录（c）2016阿帕，保留所有权利）
70 children (aged 11–18 yrs) were divided into 6 age groups to study a longer-latency waveform, slow wave (SW), across a developmental span where processing strategies are known to occur. During each block of trials, 3 events occurred: a frequent tone pip, which occurred 66% of the time; a pitch change (PC) from the standard frequency; and a stimulus omission (MS), which occurred 17% of the time. Stimuli were presented binaurally using headphones and had an interstimulus interval of 800 msec. Ss responded to 1 of the infrequent events with a finger lift that activated an RT key. On any given block of trials, Ss were instructed to respond as quickly as possible to either the PC or the MS. EEGs, EOGs, and RT were recorded, and the averaged event-related potentials to the PC were analyzed. Findings show that the relationship of endogenous component amplitude to the relevant variables and scalp location was consistent with previous studies using similar tasks with adult Ss. There were no marked changes in N250 or P350 latencies or in RT with age, indicating that decision-and stimulus-evaluation times were similar across ages. There was a decrease in overall negativity (N250, P350, and SW) observed with increases in CA, suggesting an underlying shift in potential beginning as early as 250 msec poststimulus. It appeared that SW was the source of this shift.(33 ref)(PsycINFO Database Record (c) 2016 APA, all rights reserved)