Hemispheric asymmetries in font-specific and abstractive priming of written personal names: Evidence from event-related brain potentials
Hemispheric asymmetries in font-specific and abstractive priming of written personal names: Evidence from event-related brain potentials
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DOI：
10.1016/j.brainres.2006.08.070
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发表时间：
2006-10
期刊：
影响因子：
2.9
通讯作者：
S. Schweinberger;A. L. Ramsay;J. Kaufmann
中科院分区：
文献类型：
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作者：
S. Schweinberger;A. L. Ramsay;J. Kaufmann
我们评估了名人名字的特定字体和抽象重复启动的半球差异。参与者进行快速的熟悉性判断中央凹提出的著名和不熟悉的名字。在左或右视野（LVF或RVF）中，著名的目标名称前面有质数（150 ms）。启动是以相同字体书写的与目标相同的名称（字体特定启动），以不同字体书写的相同名称（抽象启动）或不同名称（未启动条件）。在反应时间，LH优势是强大的抽象启动跨字体，但减少到微不足道的字体特定的启动。我们观察到3种不同的ERP调制启动的目标名称：一个小的字体特定的后部N200（160-220 ms），左颞N250 r（220-300 ms），和N400调制（300-500 ms）。左颞叶N250 r对RVF启动表现出较大的抽象启动，而对LVF启动表现出较小的字体特异性启动。在所有引发条件下均观察到N400效应。关于以前的研究结果，N200，N250 r，和N400反映便利化水平的字体特定的编码，词汇条目的名称，和语义处理，分别，这些研究结果表明，LH优势的名称处理是特别明显的抽象词汇条目的书面名称，一个过程，可能是由左梭状皮质介导的。
We assessed hemispheric differences in font-specific and abstractive repetition priming for famous persons' names. Participants performed speeded familiarity judgments for foveally presented famous and unfamiliar names. Famous target names were preceded by primes (150 ms) in the left or right visual field (LVF or RVF). Primes were either the same name as the target written in the same font (font-specific priming), the same name in a different font (abstractive priming), or a different name (unprimed condition). In reaction times, LH superiority was strong for abstractive priming across fonts, but was reduced to insignificance for font-specific priming. We observed 3 different ERP modulations of priming for target names: a small font-specific posterior N200 (160–220 ms), a left temporal N250r (220–300 ms), and an N400 modulation (300–500 ms). The left temporal N250r exhibited large and abstractive priming for RVF primes, but smaller and font-specific priming for LVF primes. N400 effects were observed in all priming conditions. With respect to previous findings that N200, N250r, and N400 reflect facilitation at the levels of font-specific encoding, lexical entries for names, and semantic processing, respectively, these findings suggest that the LH superiority for name processing is particularly pronounced for the access to abstractive lexical entries for written names, a process that may be mediated by the left fusiform cortex.