مورد إلكتروني
The semantic interference effect in the picture-word paradigm: An event-related fMRI study employing overt responses
| العنوان: | The semantic interference effect in the picture-word paradigm: An event-related fMRI study employing overt responses |
|---|---|
| المصدر: | Human Brain Mapping |
| بيانات النشر: | Wiley-Liss Inc 2001-12-17 |
| تفاصيل مُضافة: | De Zubicaray, Greig I. Wilson, Stephen J. McMahon, Katie L. Muthiah, Santhi |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | We used event-related functional magnetic resonance imaging (fMRI) to investigate neural responses associated with the semantic interference (SI) effect in the picture-word task. Independent stage models of word production assume that the locus of the SI effect is at the conceptual processing level (Levelt et al. [1999]: Behav Brain Sci 22:1-75), whereas interactive models postulate that it occurs at phonological retrieval (Starreveld and La Heij [1996]: J Exp Psychol Learn Mem Cogn 22:896-918). In both types of model resolution of the SI effect occurs as a result of competitive, spreading activation without the involvement of inhibitory links. These assumptions were tested by randomly presenting participants with trials from semantically-related and lexical control distractor conditions and acquiring image volumes coincident with the estimated peak hemodynamic response for each trial. Overt vocalization of picture names occurred in the absence of scanner noise, allowing reaction time (RT) data to be collected. Analysis of the RT data confirmed the SI effect. Regions showing differential hemodynamic responses during the SI effect included the left mid section of the middle temporal gyrus, left posterior superior temporal gyrus, left anterior cingulate cortex, and bilateral orbitomedial prefrontal cortex. Additional responses were observed in the frontal eye fields, left inferior parietal lobule, and right anterior temporal and occipital cortex. The results are interpreted as indirectly supporting interactive models that allow spreading activation between both conceptual processing and phonological retrieval levels of word production. In addition, the data confirm that selective attention/response suppression has a role in resolving the SI effect similar to the way in which Stroop interference is resolved. We conclude that neuroimaging studies can provide information about the neuroanatomical organization of the lexical system that may prove useful for constrainin |
| مصطلحات الفهرس: | fMRI, Middle temporal gyrus, Orbitomedial prefrontal cortex, Semantic interference, Superior temporal gyrus, Word production, Contribution to Journal |
| URL: | doi:10.1002/hbm.1054 De Zubicaray, Greig I., Wilson, Stephen J., McMahon, Katie L., & Muthiah, Santhi (2001) The semantic interference effect in the picture-word paradigm: An event-related fMRI study employing overt responses. Human Brain Mapping, 14(4), pp. 218-227. |
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| أرقام أخرى: | ATUTQ oai:eprints.qut.edu.au:196909 Faculty of Health; Institute of Health and Biomedical Innovation; School of Clinical Sciences 1157274761 |
| المصدر المساهم: | QUEENSLAND UNIV OF TECH From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1157274761 |
| قاعدة البيانات: | OAIster |
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