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- W2041034191 abstract "Functional electrical stimulation (FES) involves artificial activation of muscles with implanted electrodes to restore motor function in paralyzed individuals. The range of motor behaviors that can be generated by FES, however, is limited to a small set of preprogrammed movements such as hand grasp and release. A broader range of movements has not been implemented because of the substantial difficulty associated with identifying the patterns of muscle stimulation needed to elicit specified movements. To overcome this limitation in controlling FES systems, we used probabilistic methods to estimate the levels of muscle activity in the human arm during a wide range of free movements based on kinematic information of the upper limb. Conditional probability distributions were generated based on hand kinematics and associated surface electromyographic (EMG) signals from 12 arm muscles recorded during a training task involving random movements of the arm in one subject. These distributions were then used to predict in four other subjects the patterns of muscle activity associated with eight different movement tasks. On average, about 40% of the variance in the actual EMG signals could be accounted for in the predicted EMG signals. These results suggest that probabilistic methods ultimately might be used to predict the patterns of muscle stimulation needed to produce a wide array of desired movements in paralyzed individuals with FES." @default.
- W2041034191 created "2016-06-24" @default.
- W2041034191 creator A5039401016 @default.
- W2041034191 creator A5047707100 @default.
- W2041034191 date "2008-07-01" @default.
- W2041034191 modified "2023-10-18" @default.
- W2041034191 title "Probability-Based Prediction of Activity in Multiple Arm Muscles: Implications for Functional Electrical Stimulation" @default.
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- W2041034191 doi "https://doi.org/10.1152/jn.00956.2007" @default.
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