Research Topics
| Julien DoyonSummaryCountry: Canada Publications
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Detail Information
Publications
Informed consent for MRI and fMRI research: analysis of a sample of Canadian consent documentsNicole Palmour
Neuroethics Research Unit, Institut de Recherches Cliniques de Montreal, Canada
BMC Med Ethics 12:1. 2011..g., informed consent forms, ethics review) are vested with extremely important ethical and practical goals. Accordingly, these measures need to function effectively in real-world research and to follow high level standards...
[Functional brain plasticity associated with motor learning]Julien Doyon
Unité De Neuro imageriefonctionnelle, Centre de Recherche, Institut Universitaire de Geriatrie de Montreal, Quebec, Canada
Med Sci (Paris) 27:413-20. 2011....- Contributions of the basal ganglia and functionally related brain structures to motor learningJulien Doyon
Functional Neuroimaging Unit, University of Montreal Geriatric Institute, Montreal, Quebec, Canada
Behav Brain Res 199:61-75. 2009..These results are then put into a plausible neurobiological model of motor skill learning, which proposes an integrated view of the brain plasticity mediating this form of memory at different stages of the acquisition process... 
Reorganization and plasticity in the adult brain during learning of motor skillsJulien Doyon
Functional Neuroimaging Unit, University of Montreal Geriatric Institute, 4565, Queen Mary Street, Montreal, Quebec, H3W 1W5, Canada
Curr Opin Neurobiol 15:161-7. 2005..There has been recent behavioral, lesion and additional neuroimaging studies that have addressed the assumptions made in this theory that will help in the revision of this model...- Distinct contribution of the cortico-striatal and cortico-cerebellar systems to motor skill learningJulien Doyon
Department of Psychology, University of Montreal, PO Box 6128, Downtown Station, Montreal, Que, Canada H3C3J7
Neuropsychologia 41:252-62. 2003..e. automatization) when subjects achieve asymptotic performance, as well as during reactivation of the new skilled behavior in the retention phase... - Contribution of night and day sleep vs. simple passage of time to the consolidation of motor sequence and visuomotor adaptation learningJulien Doyon
Functional Neuroimaging Unit, University of Montreal Geriatric Institute, 4565 Queen Mary, Montreal, QC H3W 1W5, Canada
Exp Brain Res 195:15-26. 2009..They also imply that procedural memory consolidation processes differ depending on the nature of task demands... - Motor sequence learning increases sleep spindles and fast frequencies in post-training sleepAmelie Morin
Centre d Etude du Sommeil et des Rythmes Biologiques, Laboratoire de chronobiologie, Hopital du Sacre Coeur de Montreal, Montreal, Quebec, Canada
Sleep 31:1149-56. 2008..To investigate polysomnographic (PSG) sleep and NREM sleep characteristics, including sleep spindles and spectral activity involved in offline consolidation of a motor sequence learning task... - Brain plasticity related to the consolidation of motor sequence learning and motor adaptationKaren Debas
Functional Neuroimaging Unit, Centre de Recherche de l Institut Gériatrique, Universite de Montreal, Montreal, QC, Canada H3W 1W5
Proc Natl Acad Sci U S A 107:17839-44. 2010.... - Functional cerebral reorganization following motor sequence learning through mental practice with motor imageryPhilip L Jackson
Department of Psychology, Laval University, Ste-Foy, Quebec, Canada
Neuroimage 20:1171-80. 2003..Moreover, the findings are in accord with the hypothesis that mental practice with MI, at least initially, improves performance by acting on the preparation and anticipation of movements rather than on execution per se... - Modality-specific, multitask locomotor deficits persist despite good recovery after a traumatic brain injuryBradford J McFadyen
Center for Interdisciplinary Research in Rehabilitation and Social Integration, Department of Rehabilitation, Faculty of Medicine, Laval University, Quebec, Quebec, Canada
Arch Phys Med Rehabil 90:1596-606. 2009..To study the effects of sensory modality of simultaneous tasks during walking with and without obstacles after moderate to severe traumatic brain injury (TBI)... - The multifaceted nature of the relationship between performance and brain activity in motor sequence learningPierre Orban
Functional Neuroimaging Unit, Geriatric Institute Research Center and Department of Psychology, University of Montreal, 4565 Queen Mary, Montreal QC, Canada
Neuroimage 49:694-702. 2010.... - Reduced slow-wave rebound during daytime recovery sleep in middle-aged subjectsMarjolaine Lafortune
Center for Advanced Research in Sleep Medicine, Hôpital du Sacré Cœur de Montréal, Montreal, Quebec, Canada
PLoS ONE 7:e43224. 2012..Age-related changes in the quality of wake experience may underlie age-related reduction in markers of cortical synchronization enhancement after sustained wakefulness... - NREM Sleep Oscillations and Brain Plasticity in AgingStuart Fogel
Department of Psychology, Université de Montréal Montréal, QC, Canada Functional Neuroimaging Unit, Centre de Recherche de l Institut Universitaire de Gériatrie de Montréal Montréal, QC, Canada
Front Neurol 3:176. 2012..We propose that age-related reduction in sleep-dependent memory consolidation may be due in part to changes in NREM sleep oscillations... - Clinical assessment of motor imagery after strokeFrancine Malouin
Department of Rehabilitation, Laval University, Quebec City, Quebec, Canada
Neurorehabil Neural Repair 22:330-40. 2008.... - Preoperative functional magnetic resonance imaging assessment of higher-order cognitive function in patients undergoing surgery for brain tumorsCéline Amiez
Neuropsychology Cognitive Neuroscience Unit, Brain Imaging Centre, Montreal Neurological Institute, Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
J Neurosurg 108:258-68. 2008..The goal of the present study was to develop new pre- and intraoperative tools to specifically assess the function of the rostral part of the dorsal premotor cortex (PMdr) in 4 patients with brain tumors close to this region... - Effects of practice, visual loss, limb amputation, and disuse on motor imagery vividnessFrancine Malouin
Department of Rehabilitation, Laval University and Center for Interdisciplinary Research in Rehabilitation and Social Integration CIRRIS, Quebec City, Quebec, Canada
Neurorehabil Neural Repair 23:449-63. 2009..The ability to generate vivid images of movements is variable across individuals and likely influenced by sensorimotor inputs... - The impact of aging on gray matter structural covariance networksMaxime Montembeault
Centre de recherche de l Institut universitaire de geriatrie de Montreal, 4545 Chemin Queen Mary, Montreal, QC, Canada
Neuroimage 63:754-9. 2012..Our results indicate that healthy aging alters the structural organization of cognitive networks, shifting from a more distributed (in young adulthood) to a more localized topological organization in older individuals... - Dopamine modulates default mode network deactivation in elderly individuals during the Tower of London taskAtsuko Nagano-Saito
Montreal Neurological Institute, McGill University, Quebec, Canada
Neurosci Lett 458:1-5. 2009..Although task-induced deactivation was observed in the vmPFC and PCC in both groups and in both conditions, an inverse correlation between activation and problem complexity was observed in the vmPFC only in the apomorphine condition... - Functional role of the basal ganglia in the planning and execution of actionsOury Monchi
Functional Neuroimaging Unit, Centre de Recherhe, Institut Universitaire de Geriatrie de Montreal, Quebec, Canada
Ann Neurol 59:257-64. 2006..This study aimed to test the hypothesis that the caudate nucleus is primarily involved in the preparation of a novel action and not in set-shifting per se... - Motor sequence learning and movement disordersJulien Doyon
Functional Neuroimaging Unit, University of Montreal Geriatric Institute, Department of Psychology, University of Montreal, Montreal, Quebec, Canada
Curr Opin Neurol 21:478-83. 2008.... - Experience-dependent changes in cerebellar contributions to motor sequence learningJulien Doyon
Department of Psychology, University of Montreal, Montreal, QC, Canada H3C 3J7
Proc Natl Acad Sci U S A 99:1017-22. 2002.... - Dynamic cortical and subcortical networks in learning and delayed recall of timed motor sequencesVirginia B Penhune
Department of Psychology, Concordia University, Montreal, Quebec, H4B 1R6 Canada
J Neurosci 22:1397-406. 2002..During late learning, the BG may be involved in automatization. At delayed recall, movement parameters appear to be encoded in a distributed representation mediated by M1, premotor, and parietal cortex... - Changes in spinal reflex excitability associated with motor sequence learningOvidiu Lungu
Unité de Neuroimagerie Fonctionelle, Centre de recherche de l Institut universitaire de geriatrie de Montreal, Montreal, Quebec, Canada
J Neurophysiol 103:2675-83. 2010..Changes also persisted for >60 s after motor activity ceased. Such findings suggest that the excitability in some spinal reflex circuits is altered during the implicit learning process of a new motor sequence... - Does pupil constriction under blue and green monochromatic light exposure change with age?Véronique Daneault
Functional Neuroimaging Unit, University of Montreal Geriatric Institute, and Center for Advanced Research in Sleep Medicine, Hopital du Sacre Coeur de Montreal, Montreal, QC, Canada
J Biol Rhythms 27:257-64. 2012..Compared to other nonvisual functions, the light sensitivity of steady-state pupil constriction appears to remain relatively intact and is not profoundly altered by age... - Motor sequence learning and developmental dyslexiaPierre Orban
Functional Neuroimaging Unit, Geriatric Institute and Psychology Department, University of Montreal, Montreal, Quebec, Canada
Ann N Y Acad Sci 1145:151-72. 2008..It is hoped that this conceptual framework will be useful to researchers interested in further studying the nature of the motor learning impairment reported in DD... - The efficacy of combined physical and mental practice in the learning of a foot-sequence task after stroke: a case reportPhilip L Jackson
Department of Psychology, Laval University, Quebec City, Canada
Neurorehabil Neural Repair 18:106-11. 2004.... - Memory and executive dysfunctions associated with acute posttraumatic stress disorderGeneviève Lagarde
Department of Psychology, Universite de Montreal, Montreal, Quebec, Canada
Psychiatry Res 177:144-9. 2010..The findings, which point to the possibility of disturbed fronto-temporal system function in trauma-exposed individuals with acute PTSD, are particularly relevant for the early clinical management of this disorder... - Can measures of cognitive function predict locomotor behaviour in complex environments following a traumatic brain injury?Jean François Cantin
School of Psychology, Laval University, Quebec, Canada
Brain Inj 21:327-34. 2007..To determine the relationships between clinical measures of executive function and attention, and laboratory measures of anticipatory locomotor adaptations with dual tasks following a TBI... - Daytime sleep enhances consolidation of the spatial but not motoric representation of motor sequence memoryGeneviève Albouy
Functional Neuroimaging Unit, CRIUGM, Montreal, Canada
PLoS ONE 8:e52805. 2013.... - Abnormal hypothalamic response to light in seasonal affective disorderGilles Vandewalle
Functional Neuroimaging Unit, University of Montreal Geriatric Institute, Quebec, Canada
Biol Psychiatry 70:954-61. 2011..Here, we investigated the impact of light on emotion brain processing in patients with SAD and healthy control subjects and its relationship with retinal light sensitivity... - Motor-learning impairment by amantadine in healthy volunteersAbdallah Hadj Tahar
Department of Psychology, University of Montreal, Downtown, Montreal, Que, Canada
Neuropsychopharmacology 29:187-94. 2004..No change in performance was found on the motor-dexterity and attention tests. Altogether, our results lend support to the hypothesis that normal NMDA receptor function is necessary for the acquisition of motor adaptation... - Added value of mental practice combined with a small amount of physical practice on the relearning of rising and sitting post-stroke: a pilot studyFrancine Malouin
Department of Rehabilitation, Laval University and Center for Interdisciplinary Research in Rehabilitation and Social Integration CIRRIS Institut de Réadaptation en Déficience Physique de Québec A D, Quebec City, Quebec, Canada
J Neurol Phys Ther 33:195-202. 2009..This study investigated the added value of mental practice on the relearning of rising up from a chair and sitting down when combined with a small amount of physical practice... - Partial correlation for functional brain interactivity investigation in functional MRIGuillaume Marrelec
INSERM U678, Paris F 75013, France
Neuroimage 32:228-37. 2006..We demonstrate the interest of this approach on real data... - Motor learning produces parallel dynamic functional changes during the execution and imagination of sequential foot movementsMartin F Lafleur
Department of Psychology, Rehabilitation Institute of Quebec, Quebec, Canada
Neuroimage 16:142-57. 2002..This last finding suggests that the cerebral plasticity occurring during the incremental acquisition of a motor sequence executed physically is reflected by the covert production of this skilled behavior using motor imagery... - Resting state FDG-PET functional connectivity as an early biomarker of Alzheimer's disease using conjoint univariate and independent component analysesPaule Joanne Toussaint
Laboratoire d Imagerie Fonctionnelle, UMR S 678, Inserm UPMC, Paris, France
Neuroimage 63:936-46. 2012.... - [New perspectives of locomotor rehabilitation after stroke]Francine Malouin
Centre Interdisciplinaire de Recherche en Réadaptation et Intégration Sociale, 525, boulevard Hamel, Quebec, G1M 2S8, Canada
Med Sci (Paris) 19:994-8. 2003..While the former offers more practice with less physical exertion, the latter allows safe practice in a variety of challenging environments. Work is under way to assess whether these new strategies can further enhance locomotor recovery... - Neural bases of set-shifting deficits in Parkinson's diseaseOury Monchi
Montreal Neurological Institute, McGill University, Montreal, Quebec, H3W 1W5, Canada
J Neurosci 24:702-10. 2004..These results suggest that both nigrostriatal dopamine depletion and intracortical dopamine deficiency may play a role in cognitive deficits in PD, depending on the involvement of the striatum in the task at hand... - Neural correlates of the age-related changes in motor sequence learning and motor adaptation in older adultsBradley R King
Functional Neuroimaging Unit, Centre de recherche de l Institut universitaire de geriatrie de Montreal, University of Montréal Montréal, QC, Canada
Front Hum Neurosci 7:142. 2013..This paper will review the potential neural underpinnings of these behavioral results, with a particular emphasis on the influence of age-related dysfunctions in the cortico-striatal system on motor learning... - Relationship between transcranial magnetic stimulation measures of intracortical inhibition and spectroscopy measures of GABA and glutamate+glutamineSara Tremblay
Centre de Recherche en Neuropsychologie et Cognition, Universite de Montreal, Montreal, Quebec, Canada
J Neurophysiol 109:1343-9. 2013..Glutamate might specifically interact with GABAB receptors, where higher MRS-derived Glx concentrations seem to be linked to higher levels of receptor activity... - Rapid-eye-movement sleep behaviour disorder and neurodegenerative diseasesJean Francois Gagnon
Centre d Etude du Sommeil et des Rythmes Biologiques, Hopital du Sacre Coeur de Montreal, Quebec, Canada
Lancet Neurol 5:424-32. 2006..RBD might be a stage in the development of neurodegenerative disorders and increased awareness of this could lead to substantial advances in knowledge of mechanisms, diagnosis, and treatment of neurodegenerative disorders... - Imaging brain plasticity during motor skill learningLeslie G Ungerleider
Laboratory of Brain and Cognition, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland 20892, USA
Neurobiol Learn Mem 78:553-64. 2002..We also briefly review neurophysiological and psychophysical evidence for the consolidation of motor skills, and we propose a working hypothesis of its underlying neural substrate in motor sequence learning... - Brain activations during motor imagery of locomotor-related tasks: a PET studyFrancine Malouin
Department of Rehabilitation, Laval University and Center for Interdisciplinary Research in Rehabilitation and Social Integration CIRRIS, Quebec City, Canada
Hum Brain Mapp 19:47-62. 2003..Altogether, the present findings suggest that higher brain centers become progressively engaged when demands of locomotor tasks require increasing cognitive and sensory information processing... - Functional neuroanatomical networks associated with expertise in motor imageryAymeric Guillot
CRIS, Performance Motrice, Mentale et du Matériel P3M, Universite de Lyon, Universite Claude Bernard Lyon I, 27 29 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
Neuroimage 41:1471-83. 2008..225-238], our results demonstrate that compared to skilled imagers, poor imagers not only need to recruit the cortico-striatal system, but to compensate with the cortico-cerebellar system during MI of sequential movements... - Using partial correlation to enhance structural equation modeling of functional MRI dataGuillaume Marrelec
INSERM, U678, F 75013 Paris, France
Magn Reson Imaging 25:1181-9. 2007.... - Differential role for the striatum and cerebellum in response to novel movements using a motor learning paradigmRobert Laforce
Department of Psychology, University of New Brunswick, P O Box 5050, Saint John, NB, Canada E2L4L5
Neuropsychologia 40:512-7. 2002..Although exploratory, these results support a functional dissociation between the striatum and cerebellum in acquiring visuomotor skilled behaviors... - Identification of large-scale networks in the brain using fMRIPierre Bellec
Unité 678, Inserm UPMC, 91 Boulevard de l Hopital, 75634 Paris Cedex 13, France
Neuroimage 29:1231-43. 2006..The LSNI method we propose allows to detect in an exploratory and systematic way all the regions and large-scale networks activated in the working brain... - Distinct basal ganglia territories are engaged in early and advanced motor sequence learningStephane Lehericy
Center for Magnetic Resonance Research Department of Radiology, University of Minnesota, Minneapolis, MN 55455, USA
Proc Natl Acad Sci U S A 102:12566-71. 2005.... - Acquiring a cognitive skill with a new repeating version of the Tower of London taskMarie-Christine Ouellet
Ecole de Psychologie,
Can J Exp Psychol 58:272-88. 2004.... - Daytime sleep condenses the time course of motor memory consolidationMaria Korman
Brain Behavior Research Center, University of Haifa, Mount Carmel, Haifa 31905, Israel
Nat Neurosci 10:1206-13. 2007..These results suggest that the evolution of robustness to interference and the evolution of delayed gains can coincide immediately post-training and that both effects reflect sleep-sensitive processes... - Bilateral slowing of mentally simulated actions after strokeFrancine Malouin
Center for interdisciplinary research in rehabilitation and social integration CIRRIS, IRDPQ, 525 Blvd Hamel east, Quebec City, P Q, Canada, G1M 2S8
Neuroreport 15:1349-53. 2004.... - Effect of imagined movement speed on subsequent motor performanceMagali Louis
Centre de Recherche et d Innovation sur le Sport, Universite Claude Bernard Lyon I, Lyon, France
J Mot Behav 40:117-32. 2008..The effect was task-related, however: MI affected only self-initiated movement. The effect of MI on actual speed execution supports the ideomotor theory because anticipation of sensory consequences of actions is mentally represented... - Regions, systems, and the brain: hierarchical measures of functional integration in fMRIGuillaume Marrelec
INSERM, U678, Paris F 75013, France
Med Image Anal 12:484-96. 2008..We apply this method to fMRI datasets from patients with low-grade glioma and show how it can efficiently extract information related to both intra- and interhemispheric reorganization induced by lesional brain plasticity... - Working memory and mental practice outcomes after strokeFrancine Malouin
Department of Rehabilitation, Laval University, Quebec City, QC, Canada
Arch Phys Med Rehabil 85:177-83. 2004..To examine the relationship between working memory and motor improvement obtained after a single training session combining mental and physical practice... - Reliability of mental chronometry for assessing motor imagery ability after strokeFrancine Malouin
Department of Rehabilitation, Laval University and Center for Interdisciplinary Research in Rehabilitation Social Integration CIRRIS, Quebec City, QC, Canada
Arch Phys Med Rehabil 89:311-9. 2008..To examine the reproducibility of 2 chronometric tests: time-dependent motor imagery (TDMI) screening test and temporal congruence test...