Toward a functional categorization of slow waves.
Toward a functional categorization of slow waves.
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DOI：
10.1111/j.1469-8986.1988.tb01253.x
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发表时间：
1988-05
期刊：
影响因子：
3.7
通讯作者：
D. Ruchkin;Ray Johnson;David Mahaffey;Samuel Sutton
中科院分区：
文献类型：
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作者：
D. Ruchkin;Ray Johnson;David Mahaffey;Samuel Sutton
这项研究关注的是缓慢变化的、长时间的脑事件相关电位（ERP）成分，被称为慢波活动。在P3b之后的时期可以观察到慢波活动，这表明它反映了由增加的任务需求所调用的进一步处理，超出了P3b的基础处理。本实验旨在区分在困难的知觉（模式识别）和概念（算术）心理操作中出现的与特定类型的任务需求相关的慢波活动。发现三个ERP后期分量在振幅上对知觉和概念难度操作的响应不同：1)P3b的地形集中在Pz附近，与简单和困难概念操作的主观分类明显相关，当进行主观低概率操作时，P3b的振幅增加；2)潜伏期较长的中央顶叶正性慢波，随知觉难度的增加而增加，但不受概念难度的影响；(3)极长潜伏期负慢波，广泛分布于头皮中后部，随概念难度的增加而增加，随知觉难度的增加而延迟。描述：事件相关电位。慢波，P3b，心算。模式识别。信息处理。一些报告描述了缓慢变化的观点。这些“慢波”可以在P3b之后的长时间脑事件相关电位（ERP）时期观察到，这表明它们反映的成分的振幅与增加的任务需求所引发的任务进一步处理直接相关（参见Ruchkin & Sutton， 1983，关于在P3b基础上的处理之外的再需求）。慢波活动在多种情况下都有发现这项研究得到了美国公共卫生和社会服务部的部分支持。这些数据的比较表明，来自国家神经学研究所的资助和慢波的系统性差异，如交流障碍和中风，ns11199。我们很高兴，它们似乎可以简化为两大范畴，感谢Richard Coppola博士提供了基于它们的发作潜伏期的实验室分类，那些反映了计算机软件和Howard Canoune先生的编辑(1)感知操作或(2)概念
This study is concerned with slowly varying, long-duration brain event-related potential (ERP) components, referred to as Slow Wave activity. Slow Wave activity can be observed in the epoch following P3b, suggesting that it reflects further processing invoked by increased task demands, beyond the processing that underlies P3b. The present experiment was designed to distinguish Slow Wave activity related to specific types of task demands which arise during difficult perceptual (pattern recognition) and conceptual (arithmetic) mental operations. Three late ERP components that respond differentially in amplitude to manipulation of perceptual and conceptual difficulty were identified: 1) A P3b, with a topography focused about Pz, evidently related to the subjective categorization of easy and difficult conceptual operations, that increased when the subjective low-prohability operation was performed; 2) A longer latency, centroparietal positive Slow Wave that increased directly with perceptual difficulty but was not affected by conceptual difficulty; 3) A very long latency negative Slow Wave, broadly distributed over centroposterior scalp, that increased directly with conceptual difficulty while its onset was delayed when perceptual difficulty increased. DESCRIPTORS: Event-related potentials. Slow Wave, P3b, Mental arithmetic. Pattern recognition. Information processing. Several reports have described slowly varying, view). These "Slow Waves" can be observed in the long-duration brain event-related potential (ERP) epoch following P3b, suggesting that they reflect components whose amplitudes relate directly to task further processing invoked by increased task dedemands (see Ruchkin & Sutton, 1983, for a re- mands, beyond the processing that underlies P3b. Slow Wave activity has been found in a variety This research was supported in part by a U.S.P.H.S. of tasks. Comparisons of these data suggest that grant from the National Institute of Neurological and there are systematic differences in Slow Waves such Communicative Disorders and Stroke, NS 11 199. We are that they appear to be reducible to two broad catindebted to Dr. Richard Coppola for providing laboratory egories based on their onset latencies, those reflectcomputer software and Mr. Howard Canoune for editorial jng gj^jjer (1) perceptual operations or (2) concep