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Báo cáo khoa hoc:" Effect of visual distraction and auditory feedback on patient effort during robot-assisted movement training after stroke"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Effect of visual distraction and auditory feedback on patient effort during robot-assisted movement training after stroke | Secoli et al. Journal of NeuroEngineering and Rehabilitation 2011 8 21 http www.jneuroengrehab.eom content 8 1 21 Illfri 1 JOURNAL OF NEUROENGINEERING I Her and rehabilitation RESEARCH Open Access Effect of visual distraction and auditory feedback on patient effort during robot-assisted movement training after stroke 2 2 1 3 Riccardo Secoli Marie-Helene Milot Giulio Rosati and David J Reinkensmeyer Abstract Background Practicing arm and gait movements with robotic assistance after neurologic injury can help patients improve their movement ability but patients sometimes reduce their effort during training in response to the assistance. Reduced effort has been hypothesized to diminish clinical outcomes of robotic training. To better understand patient slacking we studied the role of visual distraction and auditory feedback in modulating patient effort during a common robot-assisted tracking task. Methods Fourteen participants with chronic left hemiparesis from stroke five control participants with chronic right hemiparesis and fourteen non-impaired healthy control participants tracked a visual target with their arms while receiving adaptive assistance from a robotic arm exoskeleton. We compared four practice conditions the baseline tracking task alone tracking while also performing a visual distracter task tracking with the visual distracter and sound feedback and tracking with sound feedback. For the distracter task symbols were randomly displayed in the corners of the computer screen and the participants were instructed to click a mouse button when a target symbol appeared. The sound feedback consisted of a repeating beep with the frequency of repetition made to increase with increasing tracking error. Results Participants with stroke halved their effort and doubled their tracking error when performing the visual distracter task with their left hemiparetic arm. With sound feedback however these participants increased their effort and decreased their tracking error