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Synopsis
I revisit Kawato’s proposal, that the cerebellum predictively modulates descending motor commands, to achieve smooth and coordinated motion, by acquiring an inverse model of the biomechanics, and extend it by with a novel mapping between a cerebellar multizonal microcomplex and a joint’s inverse model. This mapping predicts: Inferior olive’s oscillations mirror the biomechanical joint’s oscillations; Deep cerebellar neurons implement a gain factor on inferior olive’s signals to mirror the spinal cord’s gain. I use biophysical modeling to show that oscillations within the inferior olive match the dynamics of biophysical joints, and that deep cerebellar neurons enable a multiplicative interaction between the Purkinje and the olivary pathways. I determine the effects of current injection into the inferior olive and the deep cerebellar nuclei and use these results within a control theory model to predict disturbing the inferior olive will introduce motor output ringing, while disturbing the deep nuclei will also scale motor output. In both cases, manipulating the inverse model unmasks the joint’s natural dynamics as observed by motor ringing at the joint’s natural frequency.
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About the Author
Dr. Alvarez’s main scientific interests are in neuromorphic engineering—a highly interdisciplinary field, which strives to create a new generation of brain-like computers based on the operational principles of the biological brain. In particular his interests focus on understanding and implementing bio-realistic motor control systems.
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- PublisherScholar's Press
- Publication date2013
- ISBN 10 3639516931
- ISBN 13 9783639516937
- BindingPaperback
- Number of pages108
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ISBN 10: 3639516931
ISBN 13: 9783639516937
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Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -I revisit Kawato s proposal, that the cerebellum predictively modulates descending motor commands, to achieve smooth and coordinated motion, by acquiring an inverse model of the biomechanics, and extend it by with a novel mapping between a cerebellar multizonal microcomplex and a joint s inverse model. This mapping predicts: Inferior olive s oscillations mirror the biomechanical joint s oscillations; Deep cerebellar neurons implement a gain factor on inferior olive s signals to mirror the spinal cord s gain. I use biophysical modeling to show that oscillations within the inferior olive match the dynamics of biophysical joints, and that deep cerebellar neurons enable a multiplicative interaction between the Purkinje and the olivary pathways. I determine the effects of current injection into the inferior olive and the deep cerebellar nuclei and use these results within a control theory model to predict disturbing the inferior olive will introduce motor output ringing, while disturbing the deep nuclei will also scale motor output. In both cases, manipulating the inverse model unmasks the joint s natural dynamics as observed by motor ringing at the joint s natural frequency. 108 pp. Englisch. Seller Inventory # 9783639516937
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Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - I revisit Kawato s proposal, that the cerebellum predictively modulates descending motor commands, to achieve smooth and coordinated motion, by acquiring an inverse model of the biomechanics, and extend it by with a novel mapping between a cerebellar multizonal microcomplex and a joint s inverse model. This mapping predicts: Inferior olive s oscillations mirror the biomechanical joint s oscillations; Deep cerebellar neurons implement a gain factor on inferior olive s signals to mirror the spinal cord s gain. I use biophysical modeling to show that oscillations within the inferior olive match the dynamics of biophysical joints, and that deep cerebellar neurons enable a multiplicative interaction between the Purkinje and the olivary pathways. I determine the effects of current injection into the inferior olive and the deep cerebellar nuclei and use these results within a control theory model to predict disturbing the inferior olive will introduce motor output ringing, while disturbing the deep nuclei will also scale motor output. In both cases, manipulating the inverse model unmasks the joint s natural dynamics as observed by motor ringing at the joint s natural frequency. Seller Inventory # 9783639516937
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