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  Semantic memory retrieval: cortical couplings in object recognition in the N400 window

Supp, G. G., Schlögl, A., Fiebach, C. J., Gunter, T. C., Vigliocco, G., Pfurtscheller, G., et al. (2005). Semantic memory retrieval: cortical couplings in object recognition in the N400 window. European Journal of Neuroscience: European Neuroscience Association, 21(4), 1139-1143. doi:10.1111/j.1460-9568.2005.03906.x.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0010-D82D-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-5C0F-5
Genre: Journal Article

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Supp, Gernot G.1, Author              
Schlögl, Alois, Author
Fiebach, Christian J.1, Author              
Gunter, Thomas C.1, Author              
Vigliocco, Gabriella, Author
Pfurtscheller, Gert, Author
Petsche, Hellmuth, Author
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1Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634551              

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 Abstract: To characterize the regional changes in neuronal couplings and information transfer related to semantic aspects of object recognition in humans we used partial-directed EEG-coherence analysis (PDC). We examined the differences of processing recognizable and unrecognizable pictures as reflected by changes in cortical networks within the time-window of a determined event-related potential (ERP) component, namely the N400. Fourteen participants performed an image recognition task, while sequentially confronted with pictures of recognizable and unrecognizable objects. The time-window of N400 as indicative of object semantics was defined from the ERP. Differences of PDC in the beta-band between these tasks were represented topographically as patterns of electrical couplings, possibly indicating changing degrees of functional cooperation between brain areas. Successful memory retrieval of picture meaning appears to be supported by networks comprising left temporal and parietal regions and bilateral frontal brain areas.

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Language(s): eng - English
 Dates: 2005
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: eDoc: 239762
Other: P7111
DOI: 10.1111/j.1460-9568.2005.03906.x
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Title: European Journal of Neuroscience : European Neuroscience Association
  Other : Eur. J. Neurosci
Source Genre: Journal
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Publ. Info: Oxford, UK : Published on behalf of the European Neuroscience Association by Oxford University Press
Pages: - Volume / Issue: 21 (4) Sequence Number: - Start / End Page: 1139 - 1143 Identifier: ISSN: 0953-816X
CoNE: /journals/resource/954925575988