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短间隔掩蔽联想与重复启动的事件相关电位效应

ERP Effects of Short Interval Masked Associative and Repetition Priming.

作者信息

Holcomb Phillip J, Grainger Jonathan

机构信息

Tufts Univeristy.

出版信息

J Neurolinguistics. 2009 May;22(3):301-312. doi: 10.1016/j.jneuroling.2008.06.004.

Abstract

In a previous study we used event-related potentials to dissociate semantic (associative) and repetition priming when prime words were masked below (40 ms primes) and above (80 and 120 ms primes) levels of awareness (Holcomb et al., 2005). While robust priming effects were present on the N400 component regardless of the prime duration in the repetition priming experiment, in the semantic priming experiment significant priming effects were only obtained when primes were consciously detected. In the current study we again compared associative and repetition priming, but this time within a single experiment and using a short interval priming paradigm. As in several recent studies we again found robust repetition priming effects on both the N400 and an earlier index of priming, the N250. However, there was no evidence of any priming effect in the semantic/associative condition. The findings are discussed in the context of the functional significance of masked priming effects.

摘要

在之前的一项研究中,当启动词在意识水平以下(40毫秒启动词)和以上(80毫秒和120毫秒启动词)被掩蔽时,我们使用事件相关电位来区分语义(联想)启动和重复启动(霍尔科姆等人,2005年)。在重复启动实验中,无论启动词持续时间如何,N400成分上都存在强大的启动效应;而在语义启动实验中,只有当启动词被有意识地检测到时,才会获得显著的启动效应。在当前的研究中,我们再次比较了联想启动和重复启动,但这次是在单个实验中,并使用短间隔启动范式。正如最近的几项研究一样,我们再次发现N400和一个早期的启动指标N250上都存在强大的重复启动效应。然而,在语义/联想条件下没有任何启动效应的证据。我们将在掩蔽启动效应的功能意义背景下讨论这些发现。

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