Effect of word and syllable frequency on activation during lexical decision and reading aloud.
Effect of word and syllable frequency on activation during lexical decision and reading aloud.
复制标题
DOI：
10.1002/hbm.20236
复制
发表时间：
2006-12
影响因子：
4.8
通讯作者：
Price, Cathy J.
中科院分区：
文献类型：
--
作者：
Carreiras, Manuel;Mechelli, Andrea;Price, Cathy J.
本研究采用功能性磁共振成像（fMRI）技术，探讨了在词汇判断和阅读过程中，词汇频率和音节频率对视觉词汇加工的影响。以前的研究表明，在西班牙语的音节和词频的影响，使用行为和电生理措施的分离，这表明，sublexical（音节）表示计算和调解发射的词汇候选人。在这里，我们描述了这些词汇和亚词汇操作的神经解剖学基础及其对任务的依赖。在词汇决策过程中，低与高词频的单词增加了左额叶、前扣带回、补充运动区（SMA）和SMA前区的激活;而高与低音节频率的单词增加了左前下颞区的激活。相比之下，当大声朗读单词时，音节频率低与高的单词会增加左前额叶的激活，而没有其他显著影响。在神经解剖学的基础上，我们认为词汇判断和阅读过程中音节频率的对比效应反映了视觉词汇加工中两种不同的认知过程。具体来说，具有高频音节的单词可能会增加下颞叶的词汇竞争，同时促进左前额叶的发音规划。《大脑地图》，2006年。© 2006 Wiley利斯公司
This functional MRI (fMRI) study investigated the effect of lexical and syllable frequency on visual word processing during lexical decision and reading aloud. Previous research has shown a dissociation of syllable and word frequency effects in Spanish using behavioral and electrophysiological measures, suggesting that sublexical (syllabic) representations are computed and mediate the firing of lexical candidates. Here, we characterize the neuroanatomical basis of these lexical and sublexical manipulations and their dependence on task. During lexical decision, words with low vs. high lexical frequency increased activation in left frontal, anterior cingulate, supplemental motor area (SMA), and pre‐SMA regions; while words with high vs. low syllable frequency increased activation in a left anterior inferior temporal region. In contrast, when the words were read aloud those with low vs. high syllable frequency increased activation in the left anterior insula, with no other significant effects. On the basis of the neuroanatomy, we propose that the contrasting effects of syllable frequency during lexical decision and reading aloud reflect two different cognitive processes in visual word processing. Specifically, words with high‐frequency syllables may increase lexical competition in the inferior temporal lobe while facilitating articulatory planning in the left anterior insula. Hum Brain Mapp, 2006. © 2006 Wiley‐Liss, Inc.
登录
查看更多内容
影响因子：
2.5
作者：
Carreiras, M;Perea, M
通讯作者：
Perea, M
影响因子：
16.2
作者：
Fiez, JA;Balota, DA;Petersen, SE
通讯作者：
Petersen, SE
影响因子：
1.7
作者：
Barber, H;Vergara, M;Carreiras, M
通讯作者：
Carreiras, M
DOI：
10.1080/01690960344000224
发表时间：
2004-06-01
期刊：
LANGUAGE AND COGNITIVE PROCESSES
影响因子：
--
作者：
Conrad, M;Jacobs, A
通讯作者：
Jacobs, A
DOI：
10.1037/0096-1523.10.3.340
发表时间：
1984-01-01
影响因子：
2.1
作者：
BALOTA, DA;CHUMBLEY, JI
通讯作者：
CHUMBLEY, JI