Forward models for physiological motor control
Neural Networks - 1996 Special issue: four major hypotheses in neuroscience
Understanding intelligence
Self-organizing continuous attractor networks and motor function
Neural Networks
Hierarchical dynamical models of motor function
Neurocomputing
Self-organizing continuous attractor networks and motor function
Neural Networks
Computing with Continuous Attractors: Stability and Online Aspects
Neural Computation
A hybrid generative and predictive model of the motor cortex
Neural Networks
Neural Networks - Special issue: Computational theories of the functions of the hippocampus
Hierarchical dynamical models of motor function
Neurocomputing
Neurocomputing
Representations of continuous attractors of recurrent neural networks
IEEE Transactions on Neural Networks
Continuous attractors of Lotka-Volterra recurrent neural networks with infinite neurons
IEEE Transactions on Neural Networks
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Motor skill learning may involve training a neural system to automatically perform sequences of movements, with the training signals provided by a different system, used mainly during training to perform the movements, that operates under visual sensory guidance. We use a dynamical systems perspective to show how complex motor sequences could be learned by the automatic system. The network uses a continuous attractor network architecture to perform path integration on an efference copy of the motor signal to keep track of the current state, and selection of which motor cells to activate by a movement selector input where the selection depends on the current state being represented in the continuous attractor network. After training, the correct motor sequence may be selected automatically by a single movement selection signal. A feature of the model presented is the use of 'trace' learning rules which incorporate a form of temporal average of recent cell activity. This form of temporal learning underlies the ability of the networks to learn temporal sequences of behaviour. We show that the continuous attractor network models developed here are able to demonstrate the key features of motor function. That is, (i) the movement can occur at arbitrary speeds; (ii) the movement can occur with arbitrary force; (iii) the agent spends the same relative proportions of its time in each part of the motor sequence; (iv) the agent applies the same relative force in each part of the motor sequence; and (v) the actions always occur in the same sequence.