Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
Peer Reviewed
See detailExecutive dysfunctions in hypothyroidism and major depression
Constant, Eric; Adam, Stéphane ULg; Daumerie, Chantal et al

in Annals of General Psychiatry (2006, February 28), 5(Suppl 1), 565

Detailed reference viewed: 13 (1 ULg)
Peer Reviewed
See detailExecutive function and grey matter atrophy in healthy aging: A voxel-based morphometry analysis
Manard, Marine ULg; Bahri, Mohamed Ali ULg; Salmon, Eric ULg et al

Poster (2014, June)

Introduction Executive functioning is one of the cognitive domain that declines in healthy aging (Salthouse, Atkinson, & Berish, 2003). In addition, neuroimaging studies pointed out diverse ... [more ▼]

Introduction Executive functioning is one of the cognitive domain that declines in healthy aging (Salthouse, Atkinson, & Berish, 2003). In addition, neuroimaging studies pointed out diverse neurobiological modifications associated to normal aging, such as reduced grey and white matter volumes and cortical thickness (Raz & Rodrigue; 2006). In that context, Voxel Based Morphometry (VBM; Ashburner & Friston, 2000) and Partial Least Square (PLS; McIntoch at al., 1996, 2004) were used to investigate the effect of grey matter atrophy on executive abilities in normal aging. Methods Thirty six young (age range: 18-30) and 43 healthy older (age range: 60-78) adults were included in this study. Executive functioning was assessed by inhibition, updating and shifting tasks (Miyake et al., 2000), and a composite score for general executive ability was created. Structural high resolution T1-weighted images were acquired with a 3T head-only scanner using a standard transmit-receive quadrature head coil (Siemens, Allegra, Erlangen, Germany). The structural images were segmented using VBM8 toolbox, normalized to the MNI stereotaxic space and the resulting grey matter volume images were smoothed (Gaussian kernel: FWHM 8mm). PLS analyses were performed to determine regional grey matter volume differences between young and older adults, and next to identify the regional grey matter volumes specifically associated to executive performance in older participants (p<0.001). PLS is a validated multivariate approach that robustly identifies whole brain activity patterns correlated with behavioral data or experimental design (i.e., scores, conditions or tasks). Results Behavioral data showed a significant age-related decline in executive functioning (t=-5.43; p<.001). MRI analyses showed that significant age-related grey matter volume decrease was mostly observed across a large network including frontal, parietal, and temporal regions. Moreover significant positive correlations between the executive score and the grey matter volumes in older participants were found in a subset of these cortical areas: the inferior, middle and superior frontal cortex, the pre and postcentral gyri, the anterior and middle cingulate cortex, the inferior and superior parietal regions, the retrosplenial cortex, and finally, the inferior, middle and superior temporal regions. Discussion This study first replicated that executive abilities decline with age (Salthouse et al., 2003). This age-related executive decline is related to specific cerebral regions within a large fronto-temporo-parietal network sensitive to age. Interestingly, the areas whose atrophy is linked to executive abilities are quite similar to those evidenced in functional neuroimaging studies in young participants (see Collette & Van der Linden, 2002; Collette, Hogge, Salmon, & Van der Linden, 2006 for reviews). Therefore, using PLS multivariate analyses, we demonstrated that executive changes in normal aging are not dependent on atrophy in frontal areas only but rather comes from a grey matter volume decrease in a large antero-posterior brain network. [less ▲]

Detailed reference viewed: 139 (9 ULg)
See detailExecutive functions
Collette, Fabienne ULg; Van der Linden, Martial ULg

in Morris, R. G.; Becker, J. T. (Eds.) The cognitive Neuropsychology of Alzheimer's disease (2004)

Detailed reference viewed: 32 (8 ULg)
Peer Reviewed
See detailExecutive functions in normal aging: Impact of cognitive reserve and objective physical activity
Gilsoul, Jessica ULg; Simon, Jessica ULg; Collette, Fabienne ULg

Poster (2015, May 28)

It is now acknowledged that there exists a large inter-individual variability in age-related cognitive changes. According to Stern (2009), the cognitive reserve built up throughout the life span will make ... [more ▼]

It is now acknowledged that there exists a large inter-individual variability in age-related cognitive changes. According to Stern (2009), the cognitive reserve built up throughout the life span will make seniors more or less resilient to the deleterious effects of aging on cognition, with seniors having a high level of cognitive reserve being more prone to successfully cope with cognitive and neuronal changes. Currently, few studies have focused on the specific effects of different factors of cognitive reserve on cognition. Consequently, the objective of this study is to determine the impact of four determinants of cognitive reserve on executive functions in normal aging. Sixty-eight healthy participants aged 60 to 80 were enrolled. Regarding executive functions, Inhibition (Stroop test, Hayling test, TAP Incompatibility subtest), Shifting (TAP Flexibility subtest, Plus-Minus task), and Updating (Letter-Number Sequencing subtest from MEM III, Letter memory task, 2-back task) were assessed (Miyake et al., 2000). Cognitive reserve was measured by questionnaires assessing educational level, occupation, leisure activities and physical activity. Moreover, an accelerometer allowed quantitative measure of physical activity by recording body movements during two weeks. Group comparisons (p<0.05) showed that seniors with a high level of cognitive reserve (measured by a global composite z-score) have better updating abilities (Letter memory task and updating composite score). In order to test the influence of each cognitive reserve factor on executive functions, simple linear regressions (p<0.05) were performed. The results showed that the educational level accounts for a significant part of the variance in flexibility (TAP Flexibility) and updating (Letter-Number sequencing, 2-back and composite score). The occupational level accounts significantly for the variance of the updating composite score. Regarding the quantitative physical activity, the mean number of minutes per day in moderate or intense physical activity significantly predicted the updating composite score. These results indicate that the level of cognitive reserve is related to abilities in some executive tests, particularly updating abilities. Importantly, all aspects of cognitive reserve are not associated with the three executive processes. This indicates a specificity of the protective effect of cognitive reserve on executive abilities. [less ▲]

Detailed reference viewed: 55 (4 ULg)
See detailExecutive Summary of the of Solar Influences Data Centre Space Weather Pilot Project
Vanlommel, P.; Stegen, Koen; Warnant, René ULg et al

Report (2005)

Detailed reference viewed: 8 (0 ULg)
Full Text
Peer Reviewed
See detailExégèse de Paul. D. 39,3 (de aqua et aquae pluviae arcendae), 2,6
Gerkens, Jean-François ULg

in Tijdschrift voor Rechtsgeschiedenis (1995), 63(1995/1), 11-26

Detailed reference viewed: 17 (1 ULg)
Full Text
Peer Reviewed
See detailExegi monumentum… Notes sur Chronique des sentiments d'Alexander Kluge
Pieron, Julien ULg

Article for general public (2013)

Detailed reference viewed: 9 (2 ULg)
Full Text
See detailL'exemple (à suivre) hollandais
Dawance, Sophie ULg

in Imagine Demain le Monde (2007), 61

A l’heure de la révision du permis de lotir en Région wallonne, le beeldkwaliteitplan utilisé aux Pays-Bas pour encadrer la création de nouveaux quartiers constitue une référence intéressante. Cet outil ... [more ▼]

A l’heure de la révision du permis de lotir en Région wallonne, le beeldkwaliteitplan utilisé aux Pays-Bas pour encadrer la création de nouveaux quartiers constitue une référence intéressante. Cet outil de composition s'appuie sur un partenariat entre le public et le privé et donne la priorité à la conception urbanistique des projets. A l'inverse des permis de lotir wallons, le beeldkwaliteitplan se concentre en effet sur les espaces publics et les interfaces entre sphères privées et publiques. L'article propose d'examiner cet outil urbanistique à travers l'analyse de deux projets à Maastricht. [less ▲]

Detailed reference viewed: 50 (5 ULg)
Full Text
See detailExemple d'application d'une méthode d'estimation de rendement.
Caussin, R.; Debouche, Charles ULg

in Detroux, L. (Ed.) Fumure et protection phytosanitaire des céréales (1982)

Detailed reference viewed: 13 (2 ULg)
See detailUn exemple d'étude dendrochronologique: la charpente de la chapelle Saint_hubert à Weweler (Burg-Reuland)
Hoffsummer, Patrick ULg

in Bulletin de la Fondation Vanhove-Vonneche (1991), 3

Detailed reference viewed: 11 (3 ULg)
Full Text
See detailExemple d'étude hydrogéologique d'un système rivière-aquifère: Flémalle test site
Batlle-Aguilar, Jordi; Brouyère, Serge ULg

Conference (2007, April 18)

Cette présentation des investigations menées pour quantifier les échanges nappe - rivière au droit d'une friche industrielle fortement contaminée

Detailed reference viewed: 8 (0 ULg)
Peer Reviewed
See detailUn exemple d'ingéniérie didactique relative à l'analyse mathématique, passée au crible de concepts de la didactique
Schneider, Marguerite ULg

in Mercier, Alain (Ed.) Le génie didactique : usages et mésusages des théories de l'enseignement (2001)

Detailed reference viewed: 9 (0 ULg)
Full Text
See detailExemple d'un dispositif de formation basé sur l'accompagnement réflexif de la pratique : le CAPAES en Langues et Littératures modernes à l'Université de Liège
Simons, Germain ULg

in Puzzle (2012), 32

Cet article décrit le dispositif de formation du CAPAES en Langues et Llittératures modernes à l'ULg tel qu'il existait en 2010-2011 et les aménagements qui y ont été apportés suite à une évaluation du ... [more ▼]

Cet article décrit le dispositif de formation du CAPAES en Langues et Llittératures modernes à l'ULg tel qu'il existait en 2010-2011 et les aménagements qui y ont été apportés suite à une évaluation du dispositif par les étudiants et par le formateur. [less ▲]

Detailed reference viewed: 86 (3 ULg)
Full Text
See detailExemple d'un dispositif de formation basé sur l'accompagnement réflexif de la pratique : le CAPAES en langues modernes à l'ULg
Simons, Germain ULg

Conference (2012, August 31)

Après avoir brièvement décrit le contexte général du CAPAES en FWB, nous présentons le dispositif de formation en didactique professionnelle des langues modernes à l'ULg, en nous concentrant ... [more ▼]

Après avoir brièvement décrit le contexte général du CAPAES en FWB, nous présentons le dispositif de formation en didactique professionnelle des langues modernes à l'ULg, en nous concentrant principalement sur l'accompagnement individualisé des étudiants-enseignants assisté par la vidéo (autoscopie). Nous fournissons ensuite quelques éléments d'évaluation de ce dispositif de formation basés sur nos observations et sur deux types d'enquêtes (questionnaires et entretiens semi-structurés). Enfin, sur la base de cette évaluation croisée, nous proposons quelques pistes pour optimiser le dispositif actuel. [less ▲]

Detailed reference viewed: 35 (6 ULg)
Full Text
See detailExemple d’un parcours de recherche
Muramatsu, Kenjiro ULg

Learning material (2008)

Detailed reference viewed: 29 (11 ULg)
Full Text
Peer Reviewed
See detailL’exemple dans les discours du savoir : trois lectures et une tentative de synthèse
Provenzano, François ULg

in Diversité et Identité Culturelle en Europe [=DICE] (2011), 8(2), 83-95

Detailed reference viewed: 38 (2 ULg)
See detailUn exemple de détournement du jeu vidéo par les joueurs : la pratique du speedrun
Barnabé, Fanny ULg

Scientific conference (2014, December 18)

Detailed reference viewed: 26 (1 ULg)