Manipulating instructions strategically affects reliance on the ventral-lexical reading stream: Converging evidence from neuroimaging and reaction time
Manipulating instructions strategically affects reliance on the ventral-lexical reading stream: Converging evidence from neuroimaging and reaction time
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DOI：
10.1016/j.bandl.2012.04.009
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发表时间：
2013-05-01
影响因子：
2.5
通讯作者：
Borowsky, Ron
中科院分区：
文献类型：
--
作者：
Cummine, Jacqueline;Gould, Layla;Borowsky, Ron
阅读的神经生物学研究还没有探索在单词阅读过程中对腹侧词汇流的依赖是否可以通过指导性阅读策略来增强，或者是否不受这些策略的影响。我们研究了指令：在实验中，同时测量fMRI BOLD和外显命名反应时（RT），命名所有与名称词（基于拼写），词类型：常规词与例外词，以及印刷品中的词频（WF）（log（10）HAL WF）。指令名称的话增加了整体依赖的腹词汇流，可见BOLD激活和WF的RT的影响，与常规的话显示出最大的影响，作为一个功能的阅读策略。此外，这些变量对RT的联合效应模式支持级联而非并行处理的概念。这些结果可以容纳的双流级联模型的阅读，并提出了一个挑战，单机制的并行处理模型。(C)2012 Elsevier Inc. All rights reserved.
Neurobiology of reading research has yet to explore whether reliance on the ventral-lexical stream during word reading can be enhanced by the instructed reading strategy, or whether it is impervious to such strategies. We examined Instructions: name all vs. name words (based on spelling), Word Type: regular words vs. exception words, and Word Frequency (WF) in print (log(10) HAL WF) in an experiment while measuring fMRI BOLD and overt naming reaction time (RT) simultaneously. Instructions to name words increased overall reliance on the ventral-lexical stream, as measured by visible BOLD activation and the WF effect on RT, with regular words showing the greatest effects as a function of this reading strategy. Furthermore, the pattern of joint effects of these variables on RT supports the notion of cascaded, not parallel, processing. These results can be accommodated by dual-stream cascaded models of reading, and present a challenge to single-mechanism parallel processing models. (C) 2012 Elsevier Inc. All rights reserved.