Article (Scientific journals)
From long-term to short-term: Distinct neural networks underlying semantic knowledge and its recruitment in working memory.
Querella, Pauline; Attout, Lucie; Fias, Wim et al.
2024In Neuropsychologia, 202, p. 108949
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Keywords :
Neuroimaging; Semantic knowledge; Working memory; fMRI; Humans; Male; Female; Young Adult; Adult; Nerve Net/physiology; Nerve Net/diagnostic imaging; Brain/physiology; Brain/diagnostic imaging; Semantics; Memory, Short-Term/physiology; Magnetic Resonance Imaging; Memory, Long-Term/physiology; Brain Mapping; Brain; Memory, Long-Term; Memory, Short-Term; Nerve Net; Experimental and Cognitive Psychology; Cognitive Neuroscience; Behavioral Neuroscience
Abstract :
[en] Although numerous studies suggest that working memory (WM) and semantic long-term knowledge interact, the nature and underlying neural mechanisms of this intervention remain poorly understood. Using functional magnetic resonance imaging (fMRI), this study investigated the extent to which neural markers of semantic knowledge in long-term memory (LTM) are activated during the WM maintenance stage in 32 young adults. First, the multivariate neural patterns associated with four semantic categories were determined via an implicit semantic activation task. Next, the participants maintained words - the names of the four semantic categories implicitly activated in the first task - in a verbal WM task. Multi-voxel pattern analyses showed reliable neural decoding of the four semantic categories in the implicit semantic activation and the verbal WM tasks. Critically, however, no between-task classification of semantic categories was observed. Searchlight analyses showed that for the WM task, semantic category information could be decoded in anterior temporal areas associated with abstract semantic category knowledge. In the implicit semantic activation task, semantic category information was decoded in superior temporal, occipital and frontal cortices associated with domain-specific semantic feature representations. These results indicate that item-level semantic activation during verbal WM involves shallow rather than deep semantic information.
Disciplines :
Theoretical & cognitive psychology
Author, co-author :
Querella, Pauline ;  Psychology and Cognitive Neuroscience Research Unit, University of Liège, Belgium. Electronic address: pquerella@uliege.be
Attout, Lucie  ;  Université de Mons - UMONS > Faculté de Psychologie et des Sciences de l'Education > Service de Métrologie et Sciences du langage ; Psychology and Cognitive Neuroscience Research Unit, University of Liège, Belgium, National Fund for Scientific Research, Belgium, Department of Psychology, Psychology and Cognitive Neuroscience Research Unit, University of Liège, Place des Orateurs 1 (B33), 4000, Liège, Belgium
Fias, Wim;  Department of Experimental Psychology, Ghent University, Belgium
Majerus, Steve;  Psychology and Cognitive Neuroscience Research Unit, University of Liège, Belgium, National Fund for Scientific Research, Belgium, Department of Psychology, Psychology and Cognitive Neuroscience Research Unit, University of Liège, Place des Orateurs 1 (B33), 4000, Liège, Belgium
Language :
English
Title :
From long-term to short-term: Distinct neural networks underlying semantic knowledge and its recruitment in working memory.
Publication date :
09 September 2024
Journal title :
Neuropsychologia
ISSN :
0028-3932
eISSN :
1873-3514
Publisher :
Elsevier Ltd, England
Volume :
202
Pages :
108949
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
P362 - Métrologie et Sciences du langage
Research institute :
Langage
Funding text :
This work was supported by a grant from the Belgian National Fund for Scientific Research FRS- FNRS (grant EOS number 30446199). We would like to thank all the participants for the time invested in this study, and Arnaud Dewergifosse and Louis Hody for help with data collection.
Available on ORBi UMONS :
since 19 December 2024

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