Top-down resolution of lexico-semantic competition in speech production and the role of the left inferior frontal gyrus: An fMRI study
| العنوان: | Top-down resolution of lexico-semantic competition in speech production and the role of the left inferior frontal gyrus: An fMRI study |
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| المؤلفون: | Greig I. de Zubicaray, Katie L. McMahon, Hanna S. Gauvin |
| المصدر: | Language, Cognition and Neuroscience, 36, 1-12 Language, Cognition and Neuroscience, 36, 1, pp. 1-12 |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Temporal cortex, Linguistics and Language, Speech production, 110 000 Neurocognition of Language, Neuro- en revalidatiepsychologie, Cognitive Neuroscience, Neuropsychology and rehabilitation psychology, 05 social sciences, Experimental and Cognitive Psychology, Top-down and bottom-up design, Left inferior frontal gyrus, 050105 experimental psychology, Language and Linguistics, Pooling data, 03 medical and health sciences, 0302 clinical medicine, Production model, 0501 psychology and cognitive sciences, Lexico, Set (psychology), Psychology, computer, 030217 neurology & neurosurgery, computer.programming_language, Cognitive psychology |
| الوصف: | Contains fulltext : 219421.pdf (Publisher’s version ) (Open Access) Recent neurobiological speech production accounts propose the left inferior frontal gyrus (LIFG) resolves lexical competition using top-down control. The current fMRI experiment investigates whether response set membership influences LIFG involvement. In the picture-word interference paradigm target pictures were presented with distractor words that were, or were not, targets on other trials. Production models predict greater LIFG involvement in the high-coactivation trials with response set target-distractor pairs. Surprisingly, we found no effect of response set. Semantic interference elicited activation in the left posterior temporal cortex, similar to previous reports. Pooling data across response set conditions revealed additional significant activation in pars orbitalis of the LIFG, indicating detection benefited from the additional statistical power. Our findings challenge the co-activation assumption and indicate inconsistent LIFG results reported in the literature might reflect a combination of small effect size and low signal-to-noise, thus questioning the prominent role afforded to the LIFG. 12 p. |
| وصف الملف: | application/pdf |
| تدمد: | 2327-3798 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55f39d13fdc5c1e38c75a573b51434ff http://hdl.handle.net/2066/219421 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....55f39d13fdc5c1e38c75a573b51434ff |
| قاعدة البيانات: | OpenAIRE |
PDF full text from Publisher | تدمد: | 23273798 |
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