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Modulation De L'excitabilité Corticospinale Et Récupération Des Fonctions Locomotrices Suite À Un Accident Vasculaire Cérébral
| Content Provider | Semantic Scholar |
|---|---|
| Author | Jouvin, Catherine |
| Copyright Year | 2006 |
| Abstract | Ce projet visait a 1) determiner, chez des personnes en sante et des personnes ayant subi un accident vasculaire cerebral (AVC), la fidelite test-retest des parametres associes aux stimulations magnetiques transcrâniennes (TMS) et 2) decrire la modulation de l’excitabilite corticospinale reliee au tibial anterieur (TA) a l’aide des TMS ainsi que sa relation avec des mesures cliniques de recuperation locomotrice. Les parametres demontrant une fidelite acceptable chez les deux groupes de participants etaient le seuil moteur, le plateau et la valeur maximale des reponses motrices evoquees et la periode de silence maximale. Une reorganisation cerebrale a ete observee au stade aigu post-AVC: durant la periode de readaptation active, l’hyperexcitablilite de l’hemisphere non lese s’est resorbee et l’excitabilite de l’hemisphere lese a augmentee, suggerant un meilleur controle contralateral du TA paretique. Parallelement, une augmentation de la vitesse de marche a ete documentee suggerant un lien entre le controle contralateral et la recuperation fonctionnelle.%%%%The project aimed to 1) determine, in healthy subjects and persons with chronic stroke, the test-retest reliability of outcome measures related to transcranial magnetic stimulations (TMS) and 2) describe, by means of TMS, the modulation of the corticospinal excitability of the tibialis anterior (TA) as well as test its relationship with clinical measures of locomotor recovery. The TMS outcome measures presenting acceptable reliability level in both groups of participants were the motor threshold, the plateau and maximal values of the motor evoked potentials and the maximal silent period. Cerebral reorganization was observed in the acute stage post-stroke: during the active rehabilitation period, the non lesioned hemisphere’s hyperexcitability decreased and there was a gradual increase of the lesioned hemisphere’s excitability, suggesting a greater control of the paretic TA via the contralateral tracts. A parallel increase in gait speed was also documented thus suggesting a link between a contralateral control and functional recovery.%%%% |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://corpus.ulaval.ca/jspui/bitstream/20.500.11794/18673/1/23445.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
