ORBi: Majerus Steve - A PET investigation of lexicality and phonotactic frequency in oral language processing

Reference : A PET investigation of lexicality and phonotactic frequency in oral language processing


	Document type :	Scientific journals : Article
	Discipline(s) :	Social & behavioral sciences, psychology : Neurosciences & behavior Social & behavioral sciences, psychology : Theoretical & cognitive psychology
	To cite this reference:	http://hdl.handle.net/2268/5171

Title :	A PET investigation of lexicality and phonotactic frequency in oral language processing
Language :	English
Author, co-author :	Majerus, Steve [Université de Liège - ULg > Département des sciences cognitives > Psychopathologie cognitive >]
	Collette, Fabienne [Université de Liège - ULg > Département des sciences cognitives > Neuropsychologie >]
	Van der Linden, Martial [Université de Liège - ULg > Département des sciences cognitives > Psychopathologie cognitive >]
	Peigneux, Philippe [Université de Liège - ULg > Département des sciences cognitives > Département des sciences cognitives >]
	Laureys, Steven [Université de Liège - ULg > > Centre de recherches du cyclotron]
	Delfiore, Guy [> > > >]
	Degueldre, Christian [Université de Liège - ULg > > Centre de recherches du cyclotron >]
	Luxen, André [Université de Liège - ULg > Département de chimie (sciences) > Chimie organique de synthèse - Centre de recherches du cyclotron >]
	Salmon, Eric [Université de Liège - ULg > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn. >]
Publication date :	Jun-2002
Journal title :	Cognitive Neuropsychology
Publisher :	Psychology Press
Volume :	19
Issue/season :	4
Pages :	343-360
Audience :	International
ISSN :	0264-3294
Keywords :	[fr] imagerie cérébrale fonctionnelle ; langage ; processus cognitif ; reconnaissance des mots ; tache cognitive
Abstract :	[en] Lexicality and phonotactic frequency effects are observed in many cognitive studies on language processing, but little is known about their underlying neural substrates, especially with regard to phonotactic frequency effects. Here, we conducted a positron emission tomography (PET) study in which 11 right-handed volunteers had either to repeat or to listen to lists of words, high phonotactic frequency nonwords, and low phonotactic frequency nonwords. The comparison of word versus nonword processing consistently confirmed previous findings of left temporal and prefrontal activations classically ascribed to lexicosemantic processing. Higher activation was found in the right posterior superior temporal gyrus when comparing high phonotactic frequency nonwords to words, but not when comparing low phonotactic frequency nonwords to words. We propose that this region is implicated in the formation of temporary phonological representations for high-probability phonological events, which may support processing of high phonotactic frequency nonwords
Permalink :	http://hdl.handle.net/2268/5171
DOI :	10.1080/02643290143000213
Other URL :	http://www.informaworld.com/smpp/content~content=a713751946~db=all~order=page$$www.tandf.co.uk/journals/copyright.asp

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