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See detailMemory evaluation with a new cued recall test in patients with mild cognitive impairment and Alzheimer's disease
Ivanoiu, Adrian; Adam, Stéphane ULg; Van der Linden, Martial ULg et al

in Journal of Neurology (2005), 252(1), 47-55

Free delayed recall is considered the memory measure with the greatest sensitivity for the early diagnosis of dementia. However, its specificity for dementia could be lower, as deficits other than those ... [more ▼]

Free delayed recall is considered the memory measure with the greatest sensitivity for the early diagnosis of dementia. However, its specificity for dementia could be lower, as deficits other than those of pure memory might account for poor performance in this difficult and effortful task. Cued recall is supposed to allow a better distinction between poor memory due to concurrent factors and impairments related to the neurodegenerative process. The available cued recall tests suffer from a ceiling effect. This is a prospective, longitudinal study aiming to assess the utility of a new memory test based on cued recall that avoids the ceiling effect in the early diagnosis of Alzheimer's disease (AD). Twenty-five patients with mild cognitive impairment (MCI), 22 probable AD patients ( NINCDS-ADRDA) at a mild stage, 22 elderly patients with subjective memory complaints (SMC) and 38 normal age-matched controls took part in the study. The patients underwent a thorough cognitive evaluation and the recommended screening procedure for the diagnosis of dementia. All patients were re-examined 12 - 18 months later. A newly devised delayed cued recall test using semantic cues ( The RI48 Test) was compared with three established memory tests: the Ten Word-List Recall from CERAD, the "Doors" and the "Shapes" Tests from "The Doors and People Test Battery". Forty-four % of the MCI patients fulfilled criteria for probable AD at follow-up. The RI48 Test classified correctly 88% of the MCI and SMC participants and was the best predictor of the status of MCI and mild AD as well as the outcome of the MCI patients. Poor visual memory was the second best predictor of those MCI patients who evolved to AD. A cued recall test which avoids the ceiling effect is at least as good as the delayed free recall tests in the early detection of AD. [less ▲]

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See detailMemory for temporal context : Effects of aging, encoding instructions and retrieval strategies
Bastin, Christine ULg; Van der Linden, Martial ULg

in Memory (2005), 13(1), 95-109

Young and older adults were compared on a list discrimination task. In Experiment 1, performance declined with aging after incidental and intentional encoding of the temporal context. Moreover, there was ... [more ▼]

Young and older adults were compared on a list discrimination task. In Experiment 1, performance declined with aging after incidental and intentional encoding of the temporal context. Moreover, there was no benefit for intentional encoding in either group. In Experiment 2, each list was associated with a different encoding context. There were age differences in performance when participants tried to retrieve the encoding context of the items as a cue for their list of occurrence, but not when participants evaluated temporal distance from the strength of the memory trace. This suggests that the age-related decrease in list discrimination could be at least partly due to a difficulty to infer strategically the temporal context of the items from information encoded in the same time. [less ▲]

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See detailMemory for temporal context: Effects of aging and encoding conditions
Bastin, Christine ULg; Van der Linden, Martial ULg; Hogge, Michael

in Proceedings of the XII Conference of the European Society for Cognitive Psychology and XVIII Annual Conference of the British Psychological Society (2001)

Whether the memory for temporal context information is mediated by automatic or controlled processes is a matter of debate. If the coding of temporal context information is automatic, memory for temporal ... [more ▼]

Whether the memory for temporal context information is mediated by automatic or controlled processes is a matter of debate. If the coding of temporal context information is automatic, memory for temporal context should not be affected by intention to learn and aging. In order to address this issue, we administered a list discrimination task to young and older adults in either an incidental or an intentional encoding condition. The results showed that the list discrimination performance of the older adults was inferior to the performance of the young subjects. In addition, both young and older subjects’ discrimination performance did not improve in the intentional encoding condition. These results support the hypotheses that the temporal context of an item is encoded automatically. [less ▲]

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See detailMemory for temporal context: Effects of aging and retrieval strategies
Bastin, Christine ULg; Van der Linden, Martial ULg

in Proceedings of the International Conference Binding in Human Memory: A neurocognitive approach (2002)

The purpose of the present study was to re-explore the effects of age on memory for temporal context, assessed by a list discrimination task. Contrary to previous studies, each list (with faces as stimuli ... [more ▼]

The purpose of the present study was to re-explore the effects of age on memory for temporal context, assessed by a list discrimination task. Contrary to previous studies, each list (with faces as stimuli) was associated with a different type of judgement (honesty versus intelligence rating). The results showed no age differences on this task when no particular retrieval strategy was induced. However, when participants were encouraged to retrieve the list of occurrence of the items by retrieving the type of judgement made at encoding, there was an age effect. Older adults’ performance was at chance, whereas younger adults had a good performance. Moreover, younger adults who reported using the strategy performed as well as younger adults who did not use it. These results will be discussed by reference to the distinction between automatic versus effortful encoding processes. [less ▲]

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See detailMemory for visual items of central or marginal interest in complex scene: Impact of eye movements and subject’s expertise.
Blavier, Adelaïde ULg; Nyssen, Anne-Sophie ULg

Conference (2009, June 03)

In complex scene, memory for central interest items is better than memory for marginal interest items and this difference remains stable independently of the scene presentation duration (Melcher, 2006 ... [more ▼]

In complex scene, memory for central interest items is better than memory for marginal interest items and this difference remains stable independently of the scene presentation duration (Melcher, 2006). However, without eye movement recording, it is not possible to know whether central interest items are better remembered because they are more fixated or because they are more meaningful. To answer this question, we analysed the memory of complex scenes (paintings) according to the eye movements and subjects’ expertise. 15 novice subjects and 15 art historians (experts) were asked to look at 6 paintings that were separately and randomly presented for 10 seconds. After each painting presentation, subjects were asked questions about pictorial details of 3 categories: details of central or marginal interest and background information. Although experts had prior knowledge about the paintings, the accuracy of answers about the pictorial details did not differ between both groups: all subjects showed best memory for central information while they failed to remember background information and marginal details. Despite a longest time spent in the background zone, memory for these details was poorer than for central interest items, suggesting the importance of the meaning over the fixation duration. Eye movement recordings also showed novice’s answers were more accurate when they looked longer at the asked detail and when this detail was watched early on in the presentation while in the expert group, the accuracy of the answer was not influenced by the duration and moment they watched the asked detail. [less ▲]

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See detailMemory impairments in dementia: Which memory and how does it fail?
Salmon, Eric ULg; Collette, Fabienne ULg; Genon, Sarah ULg et al

in Frontiers in Human Neuroscience (2012)

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See detailMemory impairments in depression: Controlled and automatic processes
Jermann, Françoise; Ceschi, Grazia; Adam, Stéphane ULg et al

Poster (2000, September 21)

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See detailMemory in contracts. The experience of the EBRD (1991-2003)
Artige, Lionel ULg; Nicolini, Rosella

Conference (2005, August)

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See detailMemory in Contracts: The Experience of the EBRD (1991-2003)
Artige, Lionel ULg

Conference (2006, August)

Detailed reference viewed: 11 (2 ULg)
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See detailMemory kernels and effective Hamiltonians from time dependent methods. I. Predissociation with a curve crossing
Desouter, Michèle ULg; Liévin, Jacques

in Journal of Chemical Physics (1997), 107

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See detailMemory kernels and effective Hamiltonians from time dependent methods. II. Vibrational predissociation
Brems, Vincent; Desouter, Michèle ULg

in Journal of Chemical Physics (2002), 116

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See detailMemory of complex scenes according to the expertise and eye movements.
Blavier, Adelaïde ULg

Scientific conference (2008, April 09)

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See detailThe Memory of Objects and the Zápara Production of Knowledge
Bilhaut, Anne-Gaël ULg

in Praet, Istvan; Fortis, Pablo (Eds.) The Archaeological Encounter. Anthropological Perspectives (2011)

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See detailMemory Press change de mains
Habrand, Tanguy ULg

Article for general public (2008)

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See detailMemory processing during human sleep as assessed by functional neuroimaging
Maquet, Pierre ULg; Peigneux, Philippe ULg; Laureys, Steven ULg et al

in Revue Neurologique (2003, November), 159(11 Suppl), 27-29

Sleep is believed to participate in memory consolidation, possibly through off-line processing of recent memory traces. In this paper, we summarize functional neuroimaging data testing this hypothesis ... [more ▼]

Sleep is believed to participate in memory consolidation, possibly through off-line processing of recent memory traces. In this paper, we summarize functional neuroimaging data testing this hypothesis. First, sleep deprivation disrupts the processing of recent memory traces and hampers the changes in functional segregation and connectivity which underpin the gain in performance usually observed in subjects allowed to sleep on the first post-training night. Second, experience-dependent changes in regional brain activity occur during post-training sleep. These changes are shown to be related to the processing of high-level material and to be modulated by the amount of learning achieved during the training session. These changes do not involve isolated brain areas but entire macroscopic cerebral networks. These data suggest a role for sleep in the processing of recent memory traces. [less ▲]

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See detailMemory processing during human sleep as assessed by functional neuroimaging.
Maquet, Pierre ULg; Peigneux, Philippe ULg; Laureys, Steven ULg et al

in Revue Neurologique (2003), 159(11 Suppl), 627-9

Sleep is believed to participate in memory consolidation, possibly through off-line processing of recent memory traces. In this paper, we summarize functional neuroimaging data testing this hypothesis ... [more ▼]

Sleep is believed to participate in memory consolidation, possibly through off-line processing of recent memory traces. In this paper, we summarize functional neuroimaging data testing this hypothesis. First, sleep deprivation disrupts the processing of recent memory traces and hampers the changes in functional segregation and connectivity which underpin the gain in performance usually observed in subjects allowed to sleep on the first post-training night. Second, experience-dependent changes in regional brain activity occur during post-training sleep. These changes are shown to be related to the processing of high-level material and to be modulated by the amount of learning achieved during the training session. These changes do not involve isolated brain areas but entire macroscopic cerebral networks. These data suggest a role for sleep in the processing of recent memory traces. [less ▲]

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See detailMemory processing during sleep: mechanisms and evidence from neuroimaging studies
Peigneux, Philippe ULg; Melchior, Gwenaelle; Schmidt, Christina ULg et al

in Psychologica Belgica (2004), 44(1-2), 121-142

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See detailMemory Reactivation During Rapid Eye Movement (REM) Sleep Promotes Its Generalization and Integration in Cortical Stores
Sterpenich, Virginie; Schmidt, Christina ULg; Albouy, Genevièvre et al

in Sleep (2014), 37(6), 1061-1075

Memory reactivation appears to be a fundamental process in memory consolidation. Here, we tested the influence of memory reactivation during REM sleep on memory performance and brain responses at ... [more ▼]

Memory reactivation appears to be a fundamental process in memory consolidation. Here, we tested the influence of memory reactivation during REM sleep on memory performance and brain responses at retrieval in healthy human participants. Auditory cues were associated with pictures of faces during their encoding. These memory cues delivered during REM sleep enhanced subsequent accurate recollections but also false recognitions. These results suggest that reactivated memories interacted with semantically-related representations, and induced new creative associations, which subsequently reduced the distinction between new and previously encoded exemplars. Cues had no effect if presented during stage 2 sleep, or if they were not associated with faces during encoding. Functional MRI revealed that following exposure to conditioned cues during REM sleep, responses to faces during retrieval were enhanced both in a visual area and in a cortical region of multisensory (auditory-visual) convergence. These results show that reactivating memories during REM sleep enhances cortical responses during retrieval, suggesting the integration of recent memories within cortical circuits, favoring the generalization and schematization of the information. [less ▲]

Detailed reference viewed: 33 (2 ULg)