An ERP investigation of location invariance in masked repetition priming
An ERP investigation of location invariance in masked repetition priming
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DOI：
10.3758/cabn.8.2.222
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发表时间：
2008-06-01
影响因子：
2.9
通讯作者：
Holcomb, Phillip J.
中科院分区：
文献类型：
--
作者：
Dufau, Stephane;Grainger, Jonathan;Holcomb, Phillip J.
在一项结合掩蔽重复启动和事件相关电位（ERPs）记录的实验中，操纵了启动刺激相对于位于中心的目标词的位置。启动词可以出现在与目标相同的位置，也可以向右或向左移动一个字母的位置。重复启动效应（重复与不相关的启动条件下的振幅差异）被发现在一系列的ERP组件开始在约100毫秒posttarget发作。最早的这些，N/P150组件，被发现是敏感的总理位置。重复启动是唯一明显的与中央位于该组件中的素数。在后来的组件（N250和N400）的重复启动效应，另一方面，不受总理的位置。的结果被解释在特定位置的字母检测器，映射到一个更高的水平，位置不变的正字法代码的印刷字。
In an experiment combining masked repetition priming and the recording of event-related potentials (ERPs) the location of prime stimuli relative to centrally located target words was manipulated. Prime words could appear at the same location as targets or shifted one letter position to the right or to the left. Repetition priming effects (amplitude differences across the repeat vs. unrelated prime conditions) were found in a series of ERP components starting at around 100 msec posttarget onset. The earliest of these, the N/P150 component, was found to be sensitive to prime location. Repetition priming was only apparent with centrally located primes in this component. Repetition priming effects in later components (N250 and N400), on the other hand, were not affected by prime location. The results are interpreted in terms of location-specific letter detectors that map onto a higher level, location-invariant orthographic code for printed words.