References of "Majerus, Steve"
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See detailCharacterization of minimally conscious state minus and plus according to resting functional connectivity
Aubinet, Charlène ULg; Heine, Lizette; Martial, Charlotte ULg et al

Scientific conference (2017, February 01)

The minimally conscious state (MCS) has been sub-categorized in MCS plus and MCS minus, i.e. respectively with and without command following capacity. Here we aimed at characterizing differences in MCS ... [more ▼]

The minimally conscious state (MCS) has been sub-categorized in MCS plus and MCS minus, i.e. respectively with and without command following capacity. Here we aimed at characterizing differences in MCS plus as compared to MCS minus by means of functional connectivity (FC). Resting state functional magnetic resonance imagery (fMRI) was acquired in 292 MCS patients and a seed-based analysis was conducted on a convenience sample of 19 MCS patients (10 MCS plus and 9 MCS minus) and 35 healthy controls. We investigated the left and right frontoparietal networks (FPN), the auditory network and the default mode network (DMN). We employed a ROI-to-ROI analysis and a voxel-based morphometry in order to investigate the inter-hemispheric connectivity and the grey and white matter volume, respectively. A significantly higher FC was found in MCS plus as compared to MCS minus in the left FPN, specifically between the left dorso-lateral prefrontal cortex and the left temporo-occipital fusiform cortex (TOFC). The FC of auditory network, right FPN and DMN, inter-hemispheric connectivity and structure of grey and white matter did not show differences between patients groups. The clinical sub-categorization of MCS is therefore sustained by FC differences in a language-related executive control network. These patient groups are not differentiated by networks involved in auditory processing, perception of surroundings and internal thoughts, nor by differences in inter-hemispheric connectivity and in morphology. [less ▲]

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See detailFluctuations of Attentional Networks and Default Mode Network during the Resting State Reflect Variations in Cognitive States: Evidence from a Novel Resting-state
Van Calster, Laurens ULg; D'Argembeau, Arnaud ULg; SALMON, Eric ULg et al

in Journal of Cognitive Neuroscience (2017)

Neuroimaging studies have revealed the recruitment of a range of neural networks during the resting state, which might reflect a variety of cognitive experiences and processes occurring in an individual's ... [more ▼]

Neuroimaging studies have revealed the recruitment of a range of neural networks during the resting state, which might reflect a variety of cognitive experiences and processes occurring in an individual's mind. In this study, we focused on the default mode network (DMN) and attentional networks and investigated their association with distinct mental states when participants are not performing an explicit task. To investigate the range of possible cognitive experiences more directly, this study proposes a novel method of resting-state fMRI experience sampling, informed by a phenomenological investigation of the fluctuation of mental states during the resting state. We hypothesized that DMN activity would increase as a function of internal mentation and that the activity of dorsal and ventral networks would indicate states of top–down versus bottom–up attention at rest. Results showed that dorsal attention network activity fluctuated as a function of subjective reports of attentional control, providing evidence that activity of this network reflects the perceived recruitment of controlled attentional processes during spontaneous cognition. Activity of the DMN increased when participants reported to be in a subjective state of internal mentation, but not when they reported to be in a state of perception. This study provides direct evidence for a link between fluctuations of resting-state neural activity and fluctuations in specific cognitive processes. [less ▲]

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See detailSpecific interests in Autism with versus without speech onset delay : the importance of perceptually versus thematically organized interests
Chiodo, Liliane ULg; Eusèbe, Sandrine; Majerus, Steve ULg et al

Poster (2016, October 25)

To explore whether autistic adults with versus without speech delay also differ in the perceptual vs thematic nature of their specific interests.

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See detailEffects of aging on task- and stimulus-related cerebral attention networks
Kurth, Sophie ULg; Majerus, Steve ULg; Bastin, Christine ULg et al

in Neurobiology of Aging (2016), 44

Interactions between a dorsal attention (DAN) and a ventral attention cerebral network (VAN) have been reported in young participants during attention or short term memory (STM) tasks. Since it remains an ... [more ▼]

Interactions between a dorsal attention (DAN) and a ventral attention cerebral network (VAN) have been reported in young participants during attention or short term memory (STM) tasks. Since it remains an under-investigated question, age effects on DAN and VAN activity and their functional balance were explored during performance of a STM task. Older and young groups showed similar behavioral patterns of results. At the cerebral level, DAN activation increased as a function of increasing STM load in both groups, suggesting preserved activity in DAN during healthy aging. Age-related over-recruitment in regions of the DAN in the higher task load raised the question of compensation attempt versus less efficient use of neural resources in older adults. Lesser decrease of VAN activation with increasing load and decreased stimulus-driven activation in the VAN, especially in the higher load, in older participants suggested age-related reduced response in the VAN. However, functional connectivity measures showed that VAN was still functionally connected to the DAN in older participants. [less ▲]

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See detailRestricted interests in autism with versus without speech onset delay : the importance of perceptually versus thematically organized interests
Chiodo, Liliane ULg; Majerus, Steve ULg; Eusèbe, Sandrine et al

Poster (2016, July 07)

Objectives : To explore whether autistic adults with vs without speech delay also differ in the perceptual vs thematic nature of their restricted interests.

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See detailRestricted interests in autism with versus without speech onset delay : the importance of perceptually versus thematically organized interests
Chiodo, Liliane ULg; Majerus, Steve ULg; Eusèbe, Sandrine et al

Poster (2016, May 13)

Objectives : To explore whether autistic adults with vs without speech delay also differ in the perceptual vs thematic nature of their restricted interests.

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See detailCross-Modal Decoding of Neural Patterns Associated with Working Memory: Evidence for Attention-Based Accounts of Working Memory
Majerus, Steve ULg; Cowan, Nelson; Peters, Frédéric ULg et al

in Cerebral Cortex (2016), 26

Recent studies suggest common neural substrates involved in verbal and visual working memory (WM), interpreted as reflecting shared attention-based, short-term retention mechanisms. We used a machine ... [more ▼]

Recent studies suggest common neural substrates involved in verbal and visual working memory (WM), interpreted as reflecting shared attention-based, short-term retention mechanisms. We used a machine-learning approach to determine more directly the extent to which common neural patterns characterize retention in verbal WM and visual WM. Verbal WM was assessed via a standard delayed probe recognition task for letter sequences of variable length. Visual WM was assessed via a visual array WM task involving the maintenance of variable amounts of visual information in the focus of attention. We trained a classifier to distinguish neural activation patterns associated with high- and low-visual WM load and tested the ability of this classifier to predict verbal WM load (high–low) from their associated neural activation patterns, and vice versa. We observed significant between-task prediction of load effects during WM maintenance, in posterior parietal and superior frontal regions of the dorsal attention network; in contrast, between-task prediction in sensory processing cortices was restricted to the encoding stage. Furthermore, between-task prediction of load effects was strongest in those participants presenting the highest capacity for the visual WM task. This study provides novel evidence for common, attention-based neural patterns supporting verbal and visual WM. [less ▲]

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See detailOptimisation et rééducation de la mémoire de travail: une synthèse critique
Majerus, Steve ULg

in ANAE : Approche Neuropsychologique des Apprentissages chez l'Enfant (2016)

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See detailThe nature of verbal short-term memory impairment in dyslexia: The importance of serial order.
Majerus, Steve ULg; Cowan, Nelson

in Frontiers in Psychology (2016), 7(1522), 1-8

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See detailLa rééducation de la mémoire à court terme
Majerus, Steve ULg; Poncelet, Martine; Van der Kaa, Marie-Anne

in Seron, Xavier; Van der Linden, Martial (Eds.) Traité de neuropsychologie clinique, Tome II – 2ème édition (2016)

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See detailQuestionnaire of Memory (Q-MEM): A new measure of everyday memory functioning in school-age children
Geurten, Marie ULg; Majerus, Steve ULg; Lejeune, Caroline et al

in Applied Neuropsychology: Child (2016)

We present a new measure of everyday memory, the Questionnaire of Memory (Q-MEM), which is specifically adapted for the ecological assessment of memory disorders in school-age children and constructed ... [more ▼]

We present a new measure of everyday memory, the Questionnaire of Memory (Q-MEM), which is specifically adapted for the ecological assessment of memory disorders in school-age children and constructed with four sections tapping effortful/intentional learning, automatic/procedural learning, prospective memory/organization, and working memory. Confirmatory Factor Analyses supported the Q-MEM’s four-factor structure in 700 five-to twelve-year-old children. The analyses also revealed a good internal reliability and a good test-retest fidelity. Finally, comparisons between Q-MEM profiles of children with learning disabilities and typically developing children revealed significant differences. Therefore, the Q-MEM is a promising measure for identifying memory problems in children. [less ▲]

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See detailCommon serial order processes in musical and verbal short-term memory: evidence from a novel serial order probe recognition paradigm
Gorin, Simon ULg; Majerus, Steve ULg

in Ginsborg, Jane; Lamont, Alexandra; Philips, M (Eds.) et al Proceedings of the Ninth Triennial Conference of the European Society for the Cognitive Sciences of Music (2015, August 21)

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See detailRecovery of language comprehension in the minimally conscious state studied by FDG-PET
Wannez, Sarah ULg; Thibaut, Aurore ULg; Vitali-Roscini, Gaia et al

Poster (2015, June 21)

Detailed reference viewed: 46 (11 ULg)