Abstract: Employing a behavioral paradigm combined with the ERP technique, the present research is aimed at exploring how endogenous orienting of visual attention influenced depth processing and how it was expressed in ERP components. Main conclusions are as follows: At both the short and the long SOA, the predictive central symbolic cue produced a facilitative effect on the subsequent discrimination task in the 3D condition, and the difference between the two treatments was not statistically significant. At the short SOA, both the classic and the cross-depth facilitative effect in stereoscopic space affected N1 wave of ERP early components, in which the valid-cue trials induced a larger N1 amplitude; while at the long SOA, the invalid-cue trials tended to induce a larger N1 amplitude.

Key words: stereopsis, endogenous attentional orienting, central symbolic cue, event-related potentials (ERP)

摘要： 本研究采用行为测量与ERP分析相结合的范式，以视差分离方式、线索提示有效性为自变量，考察三维空间中内源性注意定向对立体视觉加工的影响及其脑电机制。结果发现：无论是短SOA还是长SOA，3D空间中预测性中央符号线索对后续辨认任务均产生了启动效应，且启动效应量不随SOA延长而变化。短SOA下，经典提示效应和跨深度提示效应均表现为有效提示下的N1波幅大于无效提示条件；长SOA下，线索提示效应则表现出了无效提示条件诱发较大N1波幅的趋势。

关键词: 立体视觉, 内源性注意定向, 中央符号提示, 事件相关电位