Keyword search (3,160 papers available) |
Author(s): Cammalleri A; Perrault AA; Hillcoat A; Carrese-Chacra E; Tarelli L; Patel R; Baltzan M; Chouchou F; Dang-Vu TT; Gouin JP; Pepin V;...
Insomnia treatment among individuals with comorbid insomnia and obstructive sleep apnea is suboptimal. In a pilot randomized controlled trial, 19 individuals with comorbid insomnia and obstructive ...
Article GUID: 38663849
Author(s): Harvey A.; Mannette J.; Sigall-Boneh R.; Macintyre B.; Parrott M.; Cahill L.; Connors J.; Otley A.; van Limbergen J.; Grant S.;...
Literature on dietary behaviours of the pediatric Crohn's Disease (CD) population and the relationship between dietary intake and CD activity is limited. Three dietary indices were developed an...
Article GUID: 38634640
Author(s): Anstruther M; Sean M; Tétreault P; Fortin M;
Background and Objectives: Previous research has shown associations between atrophy and fatty infiltration of the lumbar paraspinal musculature and low back pain (LBP). However, few studies have examined longitudinal changes in healthy controls and individu...
Article GUID: 38541216
Author(s): Tremblay SA; Alasmar Z; Pirhadi A; Carbonell F; Iturria-Medina Y; Gauthier CJ; Steele CJ;
Multivariate approaches have recently gained in popularity to address the physiological unspecificity of neuroimaging metrics and to better characterize the complexity of biological processes underlying behavior. However, commonly used approaches are biased...
Article GUID: 38463982
Author(s): Rosenstein B; Burdick J; Roussac A; Rye M; Naghdi N; Valentin S; Licka T; Sean M; Tétreault P; Elliott J; Fortin M;...
It remains unclear whether paraspinal muscle fatty infiltration in low back pain (LBP) is i) solely intramuscular, ii) is lying outside the epimysium between the muscle and fascial plane (epimuscul...
Article GUID: 38280825
Author(s): Avigdor T; Abdallah C; Afnan J; Cai Z; Rammal S; Grova C; Frauscher B;
Objective: The use of electrical source imaging (ESI) in assessing the source of interictal epileptic discharges (IEDs) is gaining increasing popularity in presurgical work-up of patients with drug-resistant focal epilepsy. While vigilance affects the abili...
Article GUID: 38217279
Author(s): Ashouri H; Alam NR; Khoobi M; Haghgoo S; Rasouli Z; Gholami M;
The use of conventional gadolinium(Gd)-based contrast agents in magnetic resonance imaging (MRI) poses a significant risk of Nephrogenic Systemic Fibrosis (NSF) syndrome in patients with impaired renal function (grades 4 and 5). To address this issue, a new...
Article GUID: 38215955
Author(s): Jäger AP; Bailey A; Huntenburg JM; Tardif CL; Villringer A; Gauthier CJ; Nikulin V; Bazin PL; Steele CJ;...
Decreased long-range temporal correlations (LRTC) in brain signals can be used to measure cognitive effort during task execution. Here, we examined how learning a motor sequence affects long-range ...
Article GUID: 38124341
Author(s): Rosenstein B; Montpetit C; Vaillancourt N; Dover G; Khalini-Mahani N; Weiss C; Papula LA; Melek A; Fortin M;...
Background: Low back pain (LBP) is one of the most disabling diseases and a major health issue. Despite the evidence of a link between paraspinal and gluteal muscle dysfunction and LBP, it is unkno...
Article GUID: 38110922
Title: | Decreased long-range temporal correlations in the resting-state functional magentic resonance imaging blood-oxygen-level-dependent signal reflect motor sequence learning up to 2 weeks following training |
Authors: | Jäger AP, Bailey A, Huntenburg JM, Tardif CL, Villringer A, Gauthier CJ, Nikulin V, Bazin PL, Steele CJ, |
Link: | pubmed.ncbi.nlm.nih.gov/38124341/ |
DOI: | 10.1002/hbm.26539 |
Category: | |
PMID: | 38124341 |
Dept Affiliation: | SOH
1 Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany. 2 Center for Stroke Research Berlin (CSB), Charité-Universitätsmedizin Berlin, Berlin, Germany. 3 Brain Language Lab, Freie Universität Berlin, Berlin, Germany. 4 Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada. 5 Max Planck Institute for Biological Cybernetics, Tuebingen, Germany. 6 Department of Biomedical Engineering, McGill University, Montreal, Québec, Canada. 7 Montreal Neurological Institute, Montreal, Québec, Canada. 8 Clinic for Cognitive Neurology, Leipzig, Germany. 9 Leipzig University Medical Centre, IFB Adiposity Diseases, Leipzig, Germany. 10 Collaborative Research Centre 1052-A5, University of Leipzig, Leipzig, Germany. 11 Department of Physics/School of Health, Concordia University, Montreal, Québec, Canada. 12 Montreal Heart Institute, Montreal, Québec, Canada. 13 Faculty of Social and Behavioral Sciences, University of Amsterdam, Amsterdam, Netherlands. 14 Department of Psychology/School of Health, Concordia University, Montreal, Québec, Canada. |
Description: |
Decreased long-range temporal correlations (LRTC) in brain signals can be used to measure cognitive effort during task execution. Here, we examined how learning a motor sequence affects long-range temporal memory within resting-state functional magnetic resonance imaging signal. Using the Hurst exponent (HE), we estimated voxel-wise LRTC and assessed changes over 5 consecutive days of training, followed by a retention scan 12 days later. The experimental group learned a complex visuomotor sequence while a complementary control group performed tightly matched movements. An interaction analysis revealed that HE decreases were specific to the complex sequence and occurred in well-known motor sequence learning associated regions including left supplementary motor area, left premotor cortex, left M1, left pars opercularis, bilateral thalamus, and right striatum. Five regions exhibited moderate to strong negative correlations with overall behavioral performance improvements. Following learning, HE values returned to pretraining levels in some regions, whereas in others, they remained decreased even 2 weeks after training. Our study presents new evidence of HE's possible relevance for functional plasticity during the resting-state and suggests that a cortical subset of sequence-specific regions may continue to represent a functional signature of learning reflected in decreased long-range temporal dependence after a period of inactivity. |