Browsing by Keyword "stroke"
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Item Brain oscillatory activity as a biomarker of motor recovery in chronic stroke(2020-04-01) Ray, Andreas M.; Figueiredo, Thiago D. C.; López‐Larraz, Eduardo; Birbaumer, Niels; Ramos‐Murguialday, Ander; López-Larraz, Eduardo; Ramos-Murguialday, Ander; Medical TechnologiesIn the present work, we investigated the relationship of oscillatory sensorimotor brain activity to motor recovery. The neurophysiological data of 30 chronic stroke patients with severe upper‐limb paralysis are the basis of the observational study presented here. These patients underwent an intervention including movement training based on combined brain–machine interfaces and physiotherapy of several weeks recorded in a double‐blinded randomized clinical trial. We analyzed the alpha oscillations over the motor cortex of 22 of these patients employing multilevel linear predictive modeling. We identified a significant correlation between the evolution of the alpha desynchronization during rehabilitative intervention and clinical improvement. Moreover, we observed that the initial alpha desynchronization conditions its modulation during intervention: Patients showing a strong alpha desynchronization at the beginning of the training improved if they increased their alpha desynchronization. Patients showing a small alpha desynchronization at initial training stages improved if they decreased it further on both hemispheres. In all patients, a progressive shift of desynchronization toward the ipsilesional hemisphere correlates significantly with clinical improvement regardless of lesion location. The results indicate that initial alpha desynchronization might be key for stratification of patients undergoing BMI interventions and that its interhemispheric balance plays an important role in motor recovery.Item Development of computer games for assessment and training in post-stroke arm telerehabilitation(2012) Rodriguez-De-Pablo, Cristina; Perry, Joel C.; Cavallaro, Francesca I.; Zabaleta, Haritz; Keller, Thierry; Tecnalia Research & InnovationStroke is the leading cause of long term disability among adults in industrialized nations. The majority of these disabilities include deficiencies in arm function, which can make independent living very difficult. Research shows that better results in rehabilitation are obtained when patients receive more intensive therapy. However this intensive therapy is currently too expensive to be provided by the public health system, and at home few patients perform the repetitive exercises recommended by their therapists. Computer games can provide an affordable, enjoyable, and effective way to intensify treatment, while keeping the patient as well as their therapists informed about their progress. This paper presents the study, design, implementation and user-testing of a set of computer games for at-home assessment and training of upper-limb motor impairment after stroke.Item Factors associated with health-related quality of life for adults with stroke sequelae(ASSOC ARQUIVOS NEURO- PSIQUIATRIA, PR AMADEU AMARAL 47/33, 01327-010 SAO PAULO SP, BRAZIL, 2011) dos Santos Oliveira Froes, Karla Simone; Moreno-Valdés, María Teresa; Lima e Oliveira Lopes, Daniel de Paula; Pinto da Silva, Cruiff EmersonOBJECTIVE: To assess health-related quality of life (HRQoL) among adults with stroke sequelae and to identify the factors that influenced the domains of HRQoL. METHOD: The subjects were adults with stroke who were admitted to a rehabilitation program between March and August 2008. They were investigated using the following instruments: Medical Outcomes 36-Item Short-Form Health Survey (SF-36), Functional Independence Measure (FIM) and Beck Depression Inventory (BDI). Sixty-four adults of mean age 58.8 years were evaluated. RESULTS: The individuals who had had their injuries for longer times and who were more independent and younger had better HRQoL regarding physical functioning. Social participation was associated with better HRQoL, and there was a difference between groups with and without depressive symptoms. CONCLUSION: HRQoL was compromised primarily with regard to functional characteristics. Moreover, the presence of depressive symptoms contributed towards a decline in HRQoL. Rehabilitation needs to focus on improving functionality and social participation, which may stimulate reductions in depressive symptoms and improvement of HRQoL.