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Vendredi : 8h-16h30
Attention, votre centre de documentation sera fermé du 27/04 au 12/05 inclus.
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2 résultat(s) recherche sur le mot-clé 'Transcranial magnetic stimulation'
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Changes in transcranial magnetic stimulation outcome measures in response to upper-limb physical training in stroke: A systematic review of randomized controlled trials / Louis-David Beaulieu in Annals of physical and rehabilitation medicine, Vol. 61, n°4 (Juillet 2018)
[article]
Titre : Changes in transcranial magnetic stimulation outcome measures in response to upper-limb physical training in stroke: A systematic review of randomized controlled trials Type de document : texte imprimé Auteurs : Louis-David Beaulieu ; Marie-Hélène Milot Année de publication : 2018 Article en page(s) : p. 224-234 Note générale : Doi : 10.1016/j.rehab.2017.04.003 Langues : Anglais (eng) Mots-clés : Transcranial magnetic stimulation Stroke Upper-limb physical training Systematic review Brain plasticity Clinical outcome Résumé : Background
Physical training is known to be an effective intervention to improve sensorimotor impairments after stroke. However, the link between brain plastic changes, assessed by transcranial magnetic stimulation (TMS), and sensorimotor recovery in response to physical training is still misunderstood. We systematically reviewed reports of randomized controlled trials (RCTs) involving the use of TMS over the primary motor cortex (M1) to probe brain plasticity after upper-limb physical training interventions in people with stroke.
Methods
We searched 5 databases for articles published up to October 2016, with additional studies identified by hand-searching. RCTs had to investigate pre/post-intervention changes in at least one TMS outcome measure. Two independent raters assessed the eligibility of potential studies and reviewed the selected articles’ quality by using 2 critical appraisal scales.
Results
In total, 14 reports of RCTs (pooled participants=358; mean 26±12 per study) met the selection criteria. Overall, 11 studies detected plastic changes with TMS in the presence of clinical improvements after training, and these changes were more often detected in the affected hemisphere by using map area and motor evoked potential (MEP) latency outcome measures. Plastic changes mostly pointed to increased M1/corticospinal excitability and potential interhemispheric rebalancing of M1 excitability, despite sometimes controversial results among studies. Also, the strength of the review observations was affected by heterogeneous TMS methods and upper-limb interventions across studies as well as several sources of bias within the selected studies.
Conclusions
The current evidence encourages the use of TMS outcome measures, especially MEP latency and map area to investigate plastic changes in the brain after upper-limb physical training post-stroke. However, more studies involving rigorous and standardized TMS procedures are needed to validate these observations.Permalink : ./index.php?lvl=notice_display&id=80594
in Annals of physical and rehabilitation medicine > Vol. 61, n°4 (Juillet 2018) . - p. 224-234[article] Changes in transcranial magnetic stimulation outcome measures in response to upper-limb physical training in stroke: A systematic review of randomized controlled trials [texte imprimé] / Louis-David Beaulieu ; Marie-Hélène Milot . - 2018 . - p. 224-234.
Doi : 10.1016/j.rehab.2017.04.003
Langues : Anglais (eng)
in Annals of physical and rehabilitation medicine > Vol. 61, n°4 (Juillet 2018) . - p. 224-234
Mots-clés : Transcranial magnetic stimulation Stroke Upper-limb physical training Systematic review Brain plasticity Clinical outcome Résumé : Background
Physical training is known to be an effective intervention to improve sensorimotor impairments after stroke. However, the link between brain plastic changes, assessed by transcranial magnetic stimulation (TMS), and sensorimotor recovery in response to physical training is still misunderstood. We systematically reviewed reports of randomized controlled trials (RCTs) involving the use of TMS over the primary motor cortex (M1) to probe brain plasticity after upper-limb physical training interventions in people with stroke.
Methods
We searched 5 databases for articles published up to October 2016, with additional studies identified by hand-searching. RCTs had to investigate pre/post-intervention changes in at least one TMS outcome measure. Two independent raters assessed the eligibility of potential studies and reviewed the selected articles’ quality by using 2 critical appraisal scales.
Results
In total, 14 reports of RCTs (pooled participants=358; mean 26±12 per study) met the selection criteria. Overall, 11 studies detected plastic changes with TMS in the presence of clinical improvements after training, and these changes were more often detected in the affected hemisphere by using map area and motor evoked potential (MEP) latency outcome measures. Plastic changes mostly pointed to increased M1/corticospinal excitability and potential interhemispheric rebalancing of M1 excitability, despite sometimes controversial results among studies. Also, the strength of the review observations was affected by heterogeneous TMS methods and upper-limb interventions across studies as well as several sources of bias within the selected studies.
Conclusions
The current evidence encourages the use of TMS outcome measures, especially MEP latency and map area to investigate plastic changes in the brain after upper-limb physical training post-stroke. However, more studies involving rigorous and standardized TMS procedures are needed to validate these observations.Permalink : ./index.php?lvl=notice_display&id=80594 Exemplaires (1)
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Exclu du prêtFive-day course of paired associative stimulation fails to improve motor function in stroke patients / Mohamed Tarri in Annals of physical and rehabilitation medicine, Vol. 61, n°2 (Mars 2018)
[article]
Titre : Five-day course of paired associative stimulation fails to improve motor function in stroke patients Type de document : texte imprimé Auteurs : Mohamed Tarri ; Nabila Brimhat ; David Gasq ; Benoît Lepage ; Isabelle Loubinoux ; Xavier De Boissezon ; P. Marque ; Evelyne Castel-Lacanal Année de publication : 2018 Article en page(s) : p. 78-84 Note générale : Doi : 10.1016/j.rehab.2017.11.002 Langues : Anglais (eng) Mots-clés : Paired associative stimulation Stroke Transcranial magnetic stimulation Cortical plasticity, Recovery Résumé : Background
Non-invasive brain stimulation has been studied as a therapeutic adjunct for upper-limb recovery in patients with stroke. One type of stimulation, paired associative stimulation (PAS), has effects on plasticity in both patients and healthy participants. Lasting several hours, these effects are reversible and topographically specific.
Objective
The goal was to investigate the presence of a lasting increase in motor cortex plasticity for extensor wrist muscles — extensor carpi radialis (ECR) — and an improvement in upper-limb function after 5 days of daily PAS in patients at the subacute post-stroke stage.
Methods
A total of 24 patients (mean [SD] age 50.1 [12.1] years, weeks since stroke 10.1 [5.3]) were included in a double-blind, placebo-controlled trial and randomly assigned to the PAS or sham group (n=13 and n=11). For the PAS group, patients underwent a 5-day course of electrical peripheral stimulation combined with magnetic cortical stimulation applied to the ECR muscle in a single daily session at 0.1Hz for 30min; patients with sham treatment received minimal cortical stimulation. Both patient groups underwent 2 hr of conventional physiotherapy. Variations in the motor evoked potential (MEP) surface area of the ECR muscle and Fugl–Meyer Assessment–Upper-Limb motor scores were analysed up to day 12.
Results
The 2 groups did not differ in electrophysiological or motor parameters. Repeated PAS sessions seemed to affect only patients with low initial cortical excitability. We found considerable variability in PAS effects between patients and across the sessions.
Conclusion
We failed to induce a lasting effect with PAS in the present study. PAS does not seem to be the main method for post-stroke brain stimulation. Perhaps recruitment of patients could be more selective, possibly targeting those with a wide altered ipsilesional corticomotor pathway.Permalink : ./index.php?lvl=notice_display&id=80450
in Annals of physical and rehabilitation medicine > Vol. 61, n°2 (Mars 2018) . - p. 78-84[article] Five-day course of paired associative stimulation fails to improve motor function in stroke patients [texte imprimé] / Mohamed Tarri ; Nabila Brimhat ; David Gasq ; Benoît Lepage ; Isabelle Loubinoux ; Xavier De Boissezon ; P. Marque ; Evelyne Castel-Lacanal . - 2018 . - p. 78-84.
Doi : 10.1016/j.rehab.2017.11.002
Langues : Anglais (eng)
in Annals of physical and rehabilitation medicine > Vol. 61, n°2 (Mars 2018) . - p. 78-84
Mots-clés : Paired associative stimulation Stroke Transcranial magnetic stimulation Cortical plasticity, Recovery Résumé : Background
Non-invasive brain stimulation has been studied as a therapeutic adjunct for upper-limb recovery in patients with stroke. One type of stimulation, paired associative stimulation (PAS), has effects on plasticity in both patients and healthy participants. Lasting several hours, these effects are reversible and topographically specific.
Objective
The goal was to investigate the presence of a lasting increase in motor cortex plasticity for extensor wrist muscles — extensor carpi radialis (ECR) — and an improvement in upper-limb function after 5 days of daily PAS in patients at the subacute post-stroke stage.
Methods
A total of 24 patients (mean [SD] age 50.1 [12.1] years, weeks since stroke 10.1 [5.3]) were included in a double-blind, placebo-controlled trial and randomly assigned to the PAS or sham group (n=13 and n=11). For the PAS group, patients underwent a 5-day course of electrical peripheral stimulation combined with magnetic cortical stimulation applied to the ECR muscle in a single daily session at 0.1Hz for 30min; patients with sham treatment received minimal cortical stimulation. Both patient groups underwent 2 hr of conventional physiotherapy. Variations in the motor evoked potential (MEP) surface area of the ECR muscle and Fugl–Meyer Assessment–Upper-Limb motor scores were analysed up to day 12.
Results
The 2 groups did not differ in electrophysiological or motor parameters. Repeated PAS sessions seemed to affect only patients with low initial cortical excitability. We found considerable variability in PAS effects between patients and across the sessions.
Conclusion
We failed to induce a lasting effect with PAS in the present study. PAS does not seem to be the main method for post-stroke brain stimulation. Perhaps recruitment of patients could be more selective, possibly targeting those with a wide altered ipsilesional corticomotor pathway.Permalink : ./index.php?lvl=notice_display&id=80450 Exemplaires (1)
Cote Support Localisation Section Disponibilité Revue Revue Centre de Documentation HELHa Campus Montignies Armoires à volets Document exclu du prêt - à consulter sur place
Exclu du prêt