Article (Scientific journals)
Linguistic and attentional factors - Not statistical regularities - Contribute to word-selective neural responses with FPVS-oddball paradigms.
LOCHY, Aliette; Rossion, Bruno; Lambon Ralph, Matthew et al.
2024In Cortex: A Journal Devoted to the Study of the Nervous System and Behavior, 173, p. 339 - 354
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Keywords :
Attention; EEG; FPVS; Frequency-tagging; Statistical learning; Visual word recognition; Adult; Humans; Linguistics; Electroencephalography; Brain; Experimental and Cognitive Psychology; Cognitive Neuroscience
Abstract :
[en] Studies using frequency-tagging in electroencephalography (EEG) have dramatically increased in the past 10 years, in a variety of domains and populations. Here we used Fast Periodic Visual Stimulation (FPVS) combined with an oddball design to explore visual word recognition. Given the paradigm's high sensitivity, it is crucial for future basic research and clinical application to prove its robustness across variations of designs, stimulus types and tasks. This paradigm uses periodicity of brain responses to measure discrimination between two experimentally defined categories of stimuli presented periodically. EEG was recorded in 22 adults who viewed words inserted every 5 stimuli (at 2 Hz) within base stimuli presented at 10 Hz. Using two discrimination levels (deviant words among nonwords or pseudowords), we assessed the impact of relative frequency of item repetition (set size or item repetition controlled for deviant versus base stimuli), and of the orthogonal task (focused or deployed spatial attention). Word-selective occipito-temporal responses were robust at the individual level (significant in 95% of participants), left-lateralized, larger for the prelexical (nonwords) than lexical (pseudowords) contrast, and stronger with a deployed spatial attention task as compared to the typically used focused task. Importantly, amplitudes were not affected by item repetition. These results help understanding the factors influencing word-selective EEG responses and support the validity of FPVS-EEG oddball paradigms, as they confirm that word-selective responses are linguistic. Second, they show its robustness against design-related factors that could induce statistical (ir)regularities in item rate. They also confirm its high individual sensitivity and demonstrate how it can be optimized, using a deployed rather than focused attention task, to measure implicit word recognition processes in typical and atypical populations.
Disciplines :
Neurosciences & behavior
Author, co-author :
LOCHY, Aliette  ;  University of Luxembourg > Faculty of Humanities, Education and Social Sciences (FHSE) > Department of Behavioural and Cognitive Sciences (DBCS) > Cognitive Science and Assessment
Rossion, Bruno;  Université de Lorraine, CNRS, Nancy, France, CHRU-Nancy, Service de Neurologie, Nancy, France
Lambon Ralph, Matthew;  MRC Cognition and Brain Sciences Unit, University of Cambridge, UK
Volfart, Angélique;  School of Psychology and Counselling, Faculty of Health, Queensland University of Technology, Australia
Hauk, Olaf;  MRC Cognition and Brain Sciences Unit, University of Cambridge, UK
SCHILTZ, Christine ;  University of Luxembourg > Faculty of Humanities, Education and Social Sciences (FHSE) > Department of Behavioural and Cognitive Sciences (DBCS) > Cognitive Science and Assessment
External co-authors :
yes
Language :
English
Title :
Linguistic and attentional factors - Not statistical regularities - Contribute to word-selective neural responses with FPVS-oddball paradigms.
Publication date :
April 2024
Journal title :
Cortex: A Journal Devoted to the Study of the Nervous System and Behavior
ISSN :
0010-9452
eISSN :
1973-8102
Publisher :
Masson SpA, Italy
Volume :
173
Pages :
339 - 354
Peer reviewed :
Peer Reviewed verified by ORBi
FnR Project :
16241557/READINGBRAIN
Funders :
Medical Research Council
FNR
Funding text :
The project was partly funded by a Lorraine Universit\u00E9 d'Excellence (LUE) grant to foster international collaborations between Universit\u00E9 de Lorraine and University of Luxembourg ( UL_IRP 2022 ). The first author is supported by the Fonds National de la Recherche du Luxembourg ( FNR-CORE C21/SC/16241557/READINGBRAIN ). MALR and OH are supported by intra-mural funding from the Medical Research Council (UK: MC_UU_00030/9 ).
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