The Non-negative factorization to extract muscular synergies for balancing external bi-axial moments isometrically by a redundant 3D biomechanical shoulder model
Publish place: 18th Annual Conference of Mechanical Engineering
Publish Year: 1389
نوع سند: مقاله کنفرانسی
زبان: English
View: 1,731
This Paper With 6 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ISME18_390
تاریخ نمایه سازی: 1 تیر 1389
Abstract:
In this study we utilized the concept of synergy formation as a simplifying control strategy to manage the high numbers of degree of freedom presented in the maintenance of the posture, and also during the movement of the shoulder joint. We addressed how to find the muscle synergy recruitment map to the biomechanical demands (biaxial external torque) during an isometric shoulder task. We used a numerical optimization based shoulder model to obtain muscle activation levels when a biaxial external isometric torque is exposed at the shoulder glenohumeral joint.The numerical experiments simulated varying torque directions in horizontal plane crossing this joint and used predicted muscle activation data for grouping muscles in some fixed element synergies by the nonnegative matrix factorization method. Then we scrutinized how predicted muscle synergies relate to a specific torque direction at the shoulder. The results confirmed our expectation that the few dominant synergies each created torque specifically in a given direction while each muscle contributed to more than one synergy.
Keywords:
Authors
Mohamadreza Nassajian Moghadam
Sharif University of Technology
Mohsen Asghari
Sharif University of Technology
Kamiar Aminian
Ecole Polytechnique Fe´de´rale de Lausanne
Mohamad Parnianpour۴
Sharif University of Technology
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :