F.C.T. van der Helm

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INTRODUCTION Connective tissue bands connect the horizontal rectus muscles at the level of the posterior pole to the orbital wall. These bands, referred to as pulley bands or faisseaux tendineux, purportedly act like springs to keep the rectus muscle bellies in place during eye movement out of the plane of the muscle. We examined the mechanical properties(More)
We investigated the potential use of EMG recordings from voluntary shoulder muscles in individuals with C5 spinal cord injury to automatically control the stimulation to paralyzed shoulder muscles in a task-appropriate manner. A musculoskeletal model of the human shoulder and elbow was modified to have maximum muscle forces appropriate for C5 spinal cord(More)
In biomechanical studies inverse-dynamic models are often used to predict muscle forces. The distribution of those forces among the muscles is often calculated by optimising a cost function, assuming that movements are controlled in an optimal manner. Unfortunately the quantity optimised in real life is unknown and only assumptions can be made. Many(More)
We investigated the potential use of EMG recordings from voluntary shoulder muscles in individuals with C5 spinal cord injury to automatically control the stimulation to paralyzed shoulder muscles in a taskappropriate manner. A musculoskeletal model of the human shoulder and elbow was used in simulation to train an artificial neural network (ANN) to(More)
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