The N2pc first received its name from Luck and Hillyard (1994), [3] who named the component after its characteristic features. The "N" denotes a negative polarity; "2" describes its latency in the waveform (i.e., the second negative deflection, typically around 200 ms); and "pc" stands for "posterior-contralateral," as the component appears ...

2019年1月19日 · This can be contrasted with the N2pc component, which reflects the focusing of attention onto a currently visible target (reviewed by Luck, 2012). But do these different neural signals actually reflect similar underlying attentional mechanisms?

2012年9月18日 · Luck, Steven J., ' Electrophysiological Correlates of the Focusing of Attention within Complex Visual Scenes: N2pc and Related ERP Components', in Emily S. Kappenman, and Steven J. Luck (eds), The Oxford Handbook of Event-Related Potential Components, Oxford Library of Psychology (2011; online edn, Oxford Academic, 18 Sept. 2012), https://doi ...

2021年11月12日 · N2pc或称对侧负波：出现时间与N2c成分大致相同，出现在被注意物体的对侧后部头皮，反应了注意力集中的某个方面。一般在完成工作记忆任务时出现。 一般在完成工作记忆任务时出现。

For visual search displays that contain a perceptually unique singleton item among uniform distractors, an N2pc is triggered when singletons possess task-relevant features (Luck & Hillyard, 1994; but see Hickey, McDonald, & Theeuwes, 2006, for recent evidence that the N2pc is also elicited in the course of exogenous attentional capture by ...

2022年3月1日 · There is strong evidence that N2pc reflects the focus of attention on a target in visual search tasks and allows continuous attention shift to be tracked (Luck and Hillyard, 1994). Compared with the P300 signal, N2pc is a neural mechanism related to visual-spatial target detection and has become one of the most characteristic visual attention ...

研究发现，在所搜索的靶刺激位置对侧的头皮后部电极记录部位，产生比同侧记录部位更大的200～300 ms的负成分，称为N2pc ( N2-posterior-contralateral )(Luck &.Hillyard，1994;Eimer，1996 ；Woodman &.

Electrophysiological correlates of the focusing of attention within complex visual scenes: N2pc and related ERP components. In S. J. Luck & E. S. Kappenman (Eds.), The Oxford handbook of event-related potential components (pp. 329–360).

第一步首先选取位于两边的电极，由于我们计算的是N2pc，所以左边的电极我们选取P7和PO7，右边选取P8和PO8。 第二步需要指定target出现在左侧和右侧的bin，最后给指定的bin命名一下标签，点击OK。

1996年9月1日 · This component has been termed N2pc, as it can be observed in the N2 latency range at posterior electrodes contralateral to the position of the target. Luck and Hillyard (1994a) have shown that this component is elicited when a target is characterized by a single feature that is absent in all distractors and thus `pops out' of the stimulus array.