N250 effects for letter transpositions depend on lexicality: 'casual' or 'causal'?

被引:37
作者
Andoni Dunabeitia, Jon [1 ]
Molinaro, Nicola
Laka, Itziar [3 ]
Estevez, Adelina
Carreiras, Manuel [2 ]
机构
[1] Univ La Laguna, Dept Psicol Cognit, Inst Tecnol Biomed, Tenerife 38205, Spain
[2] Basque Ctr Cognit Brain & Language, Donostia San Sebastian, Spain
[3] Univ Basque Country UPV EHU, Vitoria, Spain
关键词
letter transpositions; N250; orthographic neighbors; visual word recognition; VISUAL WORD RECOGNITION; ORTHOGRAPHIC NEIGHBORHOOD; TIME-COURSE; MODEL; PERCEPTION; WRODS; CODE;
D O I
10.1097/WNR.0b013e3283249b1c
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
We examined the electrophysiological correlates of one of the most influential orthographic effects: the transposedletter-masked priming effect. Transposed-letter nonword-word pairs ('jugde-judge'), as well as transposed-letter word-word pairs ('casual-causal') were included to investigate the influence of prime's lexicality in the transposed-letter effect. The results showed that when compared with the substituted-letter control conditions ('jugde-judge' vs. 'jupte-judge'), transposed-letter primes produced a lower negativity in the N250 component. In contrast, no differences were obtained between the two word-word priming conditions ('casual-causal' vs. 'carnal-causal'). The influence of lexicality in the transposed-letter effect is discussed according to the models of visual word recognition and previous evidence from event-related potentials. NeuroReport 20:381-387 (C) 2009 Wolters Kluwer Health | Lippincott Williams & Wilkins.
引用
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页码:381 / 387
页数:7
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