Folstein Jonathan R, Van Petten Cyma
Department of Psychology, University of Arizona, Tucson, Arizona, USA.
Psychophysiology. 2008 Jan;45(1):152-70. doi: 10.1111/j.1469-8986.2007.00602.x. Epub 2007 Sep 10.
Recent years have seen an explosion of research on the N2 component of the event-related potential, a negative wave peaking between 200 and 350 ms after stimulus onset. This research has focused on the influence of "cognitive control," a concept that covers strategic monitoring and control of motor responses. However, rich research traditions focus on attention and novelty or mismatch as determinants of N2 amplitude. We focus on paradigms that elicit N2 components with an anterior scalp distribution, namely, cognitive control, novelty, and sequential matching, and argue that the anterior N2 should be divided into separate control- and mismatch-related subcomponents. We also argue that the oddball N2 belongs in the family of attention-related N2 components that, in the visual modality, have a posterior scalp distribution. We focus on the visual modality for which components with frontocentral and more posterior scalp distributions can be readily distinguished.
近年来，对事件相关电位N2成分的研究呈爆发式增长，N2是一种在刺激开始后200至350毫秒之间达到峰值的负波。这项研究聚焦于“认知控制”的影响，“认知控制”这一概念涵盖了对运动反应的策略性监测和控制。然而，丰富的研究传统将注意力、新奇性或失配视为N2波幅的决定因素。我们关注那些在前额头皮分布中引发N2成分的范式，即认知控制、新奇性和序列匹配，并认为前额N2应分为与控制和失配相关的独立子成分。我们还认为，异常球N2属于与注意力相关的N2成分家族，在视觉模态中，这些成分具有后头皮分布。我们聚焦于视觉模态，在这种模态中，具有额中央和更靠后头皮分布的成分能够很容易地被区分开来。
