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  Theta responses are involved in lexico-semantic retrieval during language processing

Bastiaansen, M. C. M., Van der Linden, M., Ter Keurs, M., Dijkstra, T., & Hagoort, P. (2005). Theta responses are involved in lexico-semantic retrieval during language processing. Journal of Cognitive Neuroscience, 17, 530-541. doi:10.1162/0898929053279469.

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Bastiaansen, Marcel C. M.1, 2, Author           
Van der Linden, Marieke, Author
Ter Keurs, Mariken3, Author
Dijkstra, Ton, Author
Hagoort, Peter1, Author           
Affiliations:
1FC Donders Centre for Cognitive Neuroimaging , External Organizations, ou_55235              
2Neurocognition of Language Processing , MPI for Psycholinguistics, Max Planck Society, Nijmegen, NL, ou_55225              
3Language Production Group Levelt, MPI for Psycholinguistics, Max Planck Society, ou_55206              

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 Abstract: Oscillatory neuronal dynamics, observed in the human electroencephalogram (EEG) during language processing, have been related to the dynamic formation of functionally coherent networks that serve the role of integrating the different sources of information needed for understanding the linguistic input. To further explore the functional role of oscillatory synchrony during language processing, we quantified event-related EEG power changes induced by the presentation of open-class (OC) words and closed-class (CC) words in a wide range of frequencies (from 1 to 30 Hz), while subjects read a short story. Word presentation induced three oscillatory components: a theta power increase (4–7 Hz), an alpha power decrease (10–12 Hz), and a beta power decrease (16–21 Hz). Whereas the alpha and beta responses showed mainly quantitative differences between the two word classes, the theta responses showed qualitative differences between OC words and CC words: A theta power increase was found over left temporal areas for OC words, but not for CC words. The left temporal theta increase may index the activation of a network involved in retrieving the lexical–semantic properties of the OC items.

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Language(s): eng - English
 Dates: 2005
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: DOI: 10.1162/0898929053279469
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Title: Journal of Cognitive Neuroscience
Source Genre: Journal
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Pages: - Volume / Issue: 17 Sequence Number: - Start / End Page: 530 - 541 Identifier: -