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掩蔽重复图片启动效应的时程动态:刺激起始时的异步(SOA)和启动持续时间的操作。

The temporal dynamics of masked repetition picture priming effects: manipulations of stimulus-onset asynchrony (SOA) and prime duration.

机构信息

Tufts University, Medford, MA, USA.

出版信息

Brain Res. 2010 Jun 22;1340:24-39. doi: 10.1016/j.brainres.2010.04.024. Epub 2010 Apr 18.

Abstract

The current study used event-related potentials (ERPs) and masked repetition priming to examine the time-course of picture processing. We manipulated the stimulus-onset asynchrony (110 ms, 230 ms, 350 ms, and 470 ms) between repeated and unrepeated prime-target pairs while holding the prime duration constant (50 ms) (Experiment 1) as well as the prime durations (30 ms, 50 ms, 70 ms, and 90 ms) (Experiment 2) with a constant SOA of 110 ms in a masked repetition priming paradigm with pictures. The aim of this study was to further elucidate the mechanisms underlying previously observed ERP components in masked priming with pictures. We found that both the N/P190 and N400 are modulated by changes in prime duration and SOA, however, it appears that longer prime exposure rather than a longer SOA leads to more in-depth processing as indexed by larger N400 effects.

摘要

本研究使用事件相关电位(ERPs)和掩蔽重复启动范式来考察图片处理的时程。我们在保持启动持续时间(50ms)不变的情况下(实验 1),以及在掩蔽重复启动范式中,使用恒定的刺激起始时间间隔(SOA)为 110ms,操纵重复和未重复启动-目标对之间的刺激起始时间间隔(110ms、230ms、350ms 和 470ms)(实验 2),来改变图片的启动持续时间(30ms、50ms、70ms 和 90ms)。本研究旨在进一步阐明在掩蔽图片启动中观察到的先前 ERP 成分的机制。我们发现,N/P190 和 N400 都受到启动持续时间和 SOA 变化的调节,然而,似乎更长的启动暴露而不是更长的 SOA 会导致更深层次的处理,表现为更大的 N400 效应。

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本文引用的文献

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