Behavioural Brain Sciences Centre, School of Psychology, University of Birmingham, UK.
Brain Res. 2010 Mar 4;1317:203-10. doi: 10.1016/j.brainres.2009.12.090. Epub 2010 Jan 6.
Directing spatial attention or manual response selection by means of arrow cues elicits a characteristic sequence of lateralized ERP components. Van Velzen and Eimer (2003) proposed that one of these components, the EDAN (early directing-attention negativity) is not related to the control of spatial attention but is instead an N2pc in disguise, related to the visual processing of arrow cues. While this proposal seems widely accepted, it has never been evaluated whether the hitherto not well-determined scalp distribution of the EDAN matches the well-established scalp distribution of the N2pc. This paper reviews evidence from earlier published work supporting a parietal distribution of the EDAN. This strongly argues against the proposed identification with the N2pc. The EDAN may instead reflect early parietal activity within the frontoparietal network, preceding the frontal activation represented in the anterior directing-attention negativity (ADAN).
通过箭头线索引导空间注意或手动反应选择会引发特征性的侧化 ERP 成分序列。Van Velzen 和 Eimer（2003）提出，这些成分之一，即 EDAN（早期引导注意负波）与空间注意的控制无关，而是一种伪装的 N2pc，与箭头线索的视觉处理有关。虽然这个提议似乎被广泛接受，但尚未评估迄今为止尚未确定的 EDAN 的头皮分布是否与 N2pc 的既定头皮分布相匹配。本文回顾了早期发表的支持 EDAN 顶叶分布的证据。这强烈反对将其与 N2pc 进行识别。EDAN 可能反映了在前额定向注意负波（ADAN）中表现出的额前激活之前，在额顶叶网络内的早期顶叶活动。
