Exploring human rhythmic gait movement in the role of cerebral cortex signal |
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Authors: | Wei Dong Ru-bin Wang Zhi-kang Zhang |
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Institution: | Institute for Cognitive Neurodynamics,School of Information Science and Engineering,East China University of Science and Technology,Shanghai 200237,P.R.China |
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Abstract: | The rhythmic movement is a spontaneous behavior due to the central pattern generator (CPG). At present, the CPG model only
shows the spontaneous behavior, but does not refer to the instruction regulation role of the cerebral cortex. In this paper,
a modified model based on the Matsuoka neural oscillator theory is presented to better show the regulation role of the cerebral
cortex signal to the CPG neuronal network. The complex interaction between the input signal and other parameters in the CPG
network is established, making all parameters of the CPG vary with the input signal. In this way, the effect of the input
signal to the CPG network is enhanced so that the CPG network can express the self-regulation movement state instead of being
limited to the spontaneous behavior, and thus the regulation role of the cerebral cortex signal can be reflected. Numerical
simulation shows that the modified model can generate various movement forms with different modes, frequencies, and interchanges
between them. It is revealed in theories that the cerebral cortex signal can regulate the mode and frequency of the gait in
the course of the gait movement. |
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Keywords: | central pattern generator(CPG) gait movement rhythmic movement cerebral cortex signal conversion function |
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