Independent distractor frequency and age-of-acquisition effects in picture-word interference: fMRI evidence for post-lexical and lexical accounts according to distractor type

de Zubicaray, Greig I., Miozzo, Michele, Johnson, Kori, Schiller, Niels O. and McMahon, Katie L. (2012) Independent distractor frequency and age-of-acquisition effects in picture-word interference: fMRI evidence for post-lexical and lexical accounts according to distractor type. Journal of Cognitive Neuroscience, 24 2: 482-495. doi:10.1162/jocn_a_00141

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Author de Zubicaray, Greig I.
Miozzo, Michele
Johnson, Kori
Schiller, Niels O.
McMahon, Katie L.
Title Independent distractor frequency and age-of-acquisition effects in picture-word interference: fMRI evidence for post-lexical and lexical accounts according to distractor type
Journal name Journal of Cognitive Neuroscience   Check publisher's open access policy
ISSN 0898-929X
1530-8898
Publication date 2012-02
Year available 2011
Sub-type Article (original research)
DOI 10.1162/jocn_a_00141
Open Access Status File (Publisher version)
Volume 24
Issue 2
Start page 482
End page 495
Total pages 14
Place of publication Cambridge, MA, United States
Publisher M I T Press
Collection year 2012
Language eng
Abstract In two fMRI experiments, participants named pictures with superimposed distractors that were high or low in frequency or varied in terms of age of acquisition. Pictures superimposed with low-frequency words were named more slowly than those superimposed with high-frequency words, and late-acquired words interfered with picture naming to a greater extent than early-acquired words. The distractor frequency effect (Experiment 1) was associated with increased activity in left premotor and posterior superior temporal cortices, consistent with the operation of an articulatory response buffer and verbal self-monitoring system. Conversely, the distractor age-of-acquisition effect (Experiment 2) was associated with increased activity in the left middle and posterior middle temporal cortex, consistent with the operation of lexical level processes such as lemma and phonological word form retrieval. The spatially dissociated patterns of activity across the two experiments indicate that distractor effects in picture–word interference may occur at lexical or postlexical levels of processing in speech production.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Posted Online December 28, 2011.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
Centre for Advanced Imaging Publications
 
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Created: Mon, 24 Oct 2011, 11:57:01 EST by Sandrine Ducrot on behalf of Centre for Advanced Imaging