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Manipulating instructions strategically affects reliance on the ventral-lexical reading stream: Converging evidence from neuroimaging and reaction time.

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:...

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Published in:Brain & Language Vol. 125; no. 2; pp. 203 - 215
Main Authors: Cummine, Jacqueline, Gould, Layla, Zhou, Crystal, Hrybouski, Stan, Siddiqi, Zohaib, Chouinard, Brea, Borowsky, Ron
Format: Journal Article
Published: Academic Press Inc. May2013
Online Access:View this record in EBSCOhost
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      pub: Academic Press Inc.
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        atl: Manipulating instructions strategically affects reliance on the ventral-lexical reading stream: Converging evidence from neuroimaging and reaction time.
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        au:
          Cummine, Jacqueline
          Gould, Layla
          Zhou, Crystal
          Hrybouski, Stan
          Siddiqi, Zohaib
          Chouinard, Brea
          Borowsky, Ron
        affil: Department of Speech Pathology and Audiology, University of Alberta, Edmonton, Alberta, Canada T6G 2G4; Centre for Neuroscience, University of Alberta, Edmonton, Alberta, Canada T6G 2G4.
      sug:
        subj:
          Reaction Time Physiology
          Reading
          Verbal Behavior
          Adult
          Female
          Magnetic Resonance Imaging
          Male
          Neuroradiography Methods
          Semantics
          Young Adult
          Adult: 19-44 years
          Female
          Male
      ab: 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 (log10 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.
      pubtype: Academic Journal
      doctype: Journal Article
      ougenre: Article
    language: English
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