Papers by Muriel Vandenberghe
Doctorat en Sciences Psychologiques et de l'éducationinfo:eu-repo/semantics/nonPublishe
Revue De Neuropsychologie, 2021
L’IMA-12 est une nouvelle epreuve d’evaluation de la memoire episodique constituee de 12 images m... more L’IMA-12 est une nouvelle epreuve d’evaluation de la memoire episodique constituee de 12 images minimisant le biais lie au niveau de connaissance lexicale de la langue francaise. Elle accepte comme items a rappeler les denominations incorrectes lors de la phase d’encodage, voire fournies dans la langue maternelle de la personne evaluee. Des donnees normatives ont ete recoltees sur 393 personnes francophones reparties selon trois groupes d’âge (de 60 a 89 ans), quatre niveaux de scolarite et le genre. Le genre affectait uniquement les rappels libres (femmes > hommes) et la scolarite uniquement le score au second essai de rappel libre. L’âge affectait plusieurs scores (dont les rappels libres, rappel differe total, indices de consolidation), le groupe 60-69 ans obtenant des scores plus eleves que ceux de 70-79 et 80-89 ans. Vu leurs distributions asymetriques, les donnees normatives (âge x genre x scolarite) sont presentees sous forme de scores seuils calcules a partir de la median...
info:eu-repo/semantics/publishe
info:eu-repo/semantics/publishe
info:eu-repo/semantics/nonPublishe
To disentangle perceptual and motor learning in Serial Reaction Time (SRT) tasks, we explored a p... more To disentangle perceptual and motor learning in Serial Reaction Time (SRT) tasks, we explored a paradigm in which successive stimuli and successive responses can follow various sequences ( Goschke, 1998). Participants responded by pressing a button, the bud having to correspond in space to the location of a letter that appeared on the screen. In the motor condition, motor responses followed a 12-elements repeating sequence, whereas letters were randomly proposed. Conversely, in the perceptual condition, letters followed a sequence, whereas motor responses were random. We also exposed participants to a combined condition (as in classical SRT tasks) and to a random one. To explore acquired knowledge, we used cued generation and recognition tasks. Challenging previous findings that motor learning is crucial for sequence learning, our results indicate that healthy participants are able to learn purely perceptual sequences, but not purely motor’s one. We also evidenced clear multiple seq...
DI-fusion, le Dépôt institutionnel numérique de l'ULB, est l'outil de référence... more DI-fusion, le Dépôt institutionnel numérique de l'ULB, est l'outil de référencementde la production scientifique de l'ULB.L'interface de recherche DI-fusion permet de consulter les publications des chercheurs de l'ULB et les thèses qui y ont été défendues.
Gériatrie et Psychologie Neuropsychiatrie du Viellissement
An appropriate medication management depends on executive system integrity, which can be affected... more An appropriate medication management depends on executive system integrity, which can be affected by aging. Previous studies showed that seniors commit frequent errors when having to fill in a pillbox. Nevertheless, to the best of our knowledge, no study has really considered the absence of cognitive disorders in the studied sample. The present study aimed to investigate pillbox filling in cognitively healthy elderly (specially focusing on executive system preservation) for whom no cognitive deterioration neither any depressive episode had occurred during a one year period. The filling task has been completed using a weekly pillbox and eight fictitious drugs. The selection of the 27 seniors aged from 71 to 90 years has been based on their results to neuropsychological tests (Trail making test, Stroop Victoria, Tower of London, Montreal cognitive assessment) and a depression assessment scale (Short geriatric depression scale). Results showed that 67% of the participants committed at least one error when filling the pillbox and 56% at least 3. The maximal number of errors was 38. Further, the errors analysis showed that 85% of the errors had been repeated (e.g. reproduced on several days). Finally, the more complex the drug prescriptions are, the higher the error rate is. No other variable (age, gender, level education, habit of filling a pillbox) had any effect on the number of errors. So, the pillbox filing task can be considered as a complex task associated with a high risk of errors. Moreover, the absence of cognitive disorders is not a success factor to the task. A prospect for the future should be to try to limit the error rate by developing, for instance, an external support helping to the filling of the pillbox and a learning process for the use of this support.
Neuropsychologia, 2006
Can associative learning take place without awareness? We explore this issue in a sequence learni... more Can associative learning take place without awareness? We explore this issue in a sequence learning paradigm with amnesic and control participants, who were simply asked to react to one of four possible stimuli on each trial. Unknown to them, successive stimuli occurred in a sequence. We manipulated the extent to which stimuli followed the sequence in a deterministic manner (noiseless condition) or only probabilistically so (noisy condition). Through this paradigm, we aimed at addressing two central issues: first, we asked whether sequence learning takes place in either condition with amnesic patients. Second, we asked whether this learning takes place without awareness. To answer this second question, participants were asked to perform a subsequent sequence generation task under inclusion and exclusion conditions, as well as a recognition task. Reaction times results show that amnesic patients learned the sequence only in the deterministic condition. However, they failed to be able to reproduce the sequence in the generation task. In contrast, we found learning for both sequence structures in control participants, but only control participants exposed to a deterministic sequence were successful in performing the generation task, thus suggesting that the acquired knowledge can be used consciously in this condition. Neither amnesic nor control participants showed correct old/new judgments in the recognition task. The results strengthen the claim that implicit learning is at least partly spared in amnesia, and the role of contextual information available for learning is discussed.
Dementia and Geriatric Cognitive Disorders, 2012
were very similar. Two cutoffs were identified at 83/100 and 89/100 with a specificity to normali... more were very similar. Two cutoffs were identified at 83/100 and 89/100 with a specificity to normality of 98.6% if the ACE-R score was ≥83 and a sensitivity to dementia of 98.4% if the ACE-R score was ≤89. Conclusion: ACE-R in French is as reliable and valid as the original version to detect dementia.
Consciousness and Cognition, 2006
How do we find out whether someone is conscious of some information or not? A simple answer is "W... more How do we find out whether someone is conscious of some information or not? A simple answer is "We just ask them"! However, things are not so simple. Here, we review recent developments in the use of subjective and objective methods in implicit learning research and discuss the highly complex methodological problems that their use raises in the domain.
DI-fusion, le Dépôt institutionnel numérique de l'ULB, est l'outil de référencementde l... more DI-fusion, le Dépôt institutionnel numérique de l'ULB, est l'outil de référencementde la production scientifique de l'ULB.L'interface de recherche DI-fusion permet de consulter les publications des chercheurs de l'ULB et les thèses qui y ont été défendues.
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Papers by Muriel Vandenberghe