Interference from object part relations in spoken word production: behavioural and fMRI evidence

Zubicaray, Greig de, Fraser, Douglas, Ramajoo, Kori and McMahon, Katie (2017) Interference from object part relations in spoken word production: behavioural and fMRI evidence. Neuropsychologia, 96 78-88. doi:10.1016/j.neuropsychologia.2017.01.010

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Author Zubicaray, Greig de
Fraser, Douglas
Ramajoo, Kori
McMahon, Katie
Title Interference from object part relations in spoken word production: behavioural and fMRI evidence
Journal name Neuropsychologia   Check publisher's open access policy
ISSN 0028-3932
Publication date 2017-02-01
Year available 2017
Sub-type Article (original research)
DOI 10.1016/j.neuropsychologia.2017.01.010
Open Access Status File (Author Post-print)
Volume 96
Start page 78
End page 88
Total pages 11
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Abstract Few investigations of lexical access in spoken word production have investigated the cognitive and neural mechanisms involved in action naming. These are likely to be more complex than the mechanisms involved in object naming, due to the ways in which conceptual features of action words are represented. The present study employed a blocked cyclic naming paradigm to examine whether related action contexts elicit a semantic interference effect akin to that observed with categorically related objects. Participants named pictures of intransitive actions to avoid a confound with object processing. In Experiment 1, body-part related actions (e.g., running, walking, skating, hopping) were named significantly slower compared to unrelated actions (e.g., laughing, running, waving, hiding). Experiment 2 employed perfusion functional Magnetic Resonance Imaging (fMRI) to investigate the neural mechanisms involved in this semantic interference effect. Compared to unrelated actions, naming related actions elicited significant perfusion signal increases in frontotemporal cortex, including bilateral inferior frontal gyrus (IFG) and hippocampus, and decreases in bilateral posterior temporal, occipital and parietal cortices, including intraparietal sulcus (IPS). The findings demonstrate a role for temporoparietal cortex in conceptual-lexical processing of intransitive action knowledge during spoken word production, and support the proposed involvement of interference resolution and incremental learning mechanisms in the blocked cyclic naming paradigm.
Keyword Semantic interference
Action naming
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID FT0991634
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Queensland Brain Institute Publications
School of Public Health Publications
Centre for Advanced Imaging Publications
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Created: Thu, 11 Jun 2015, 02:05:49 EST by Lorine Wilkinson on behalf of Centre for Advanced Imaging