Versatile networks of simulated spiking neurons displaying winner-take-all behavior

Y Chen, JL McKinstry, GM Edelman - Frontiers in computational …, 2013 - frontiersin.org
Y Chen, JL McKinstry, GM Edelman
Frontiers in computational neuroscience, 2013frontiersin.org
We describe simulations of large-scale networks of excitatory and inhibitory spiking neurons
that can generate dynamically stable winner-take-all (WTA) behavior. The network
connectivity is a variant of center-surround architecture that we call center-annular-surround
(CAS). In this architecture each neuron is excited by nearby neighbors and inhibited by more
distant neighbors in an annular-surround region. The neural units of these networks
simulate conductance-based spiking neurons that interact via mechanisms susceptible to …
We describe simulations of large-scale networks of excitatory and inhibitory spiking neurons that can generate dynamically stable winner-take-all (WTA) behavior. The network connectivity is a variant of center-surround architecture that we call center-annular-surround (CAS). In this architecture each neuron is excited by nearby neighbors and inhibited by more distant neighbors in an annular-surround region. The neural units of these networks simulate conductance-based spiking neurons that interact via mechanisms susceptible to both short-term synaptic plasticity and STDP. We show that such CAS networks display robust WTA behavior unlike the center-surround networks and other control architectures that we have studied. We find that a large-scale network of spiking neurons with separate populations of excitatory and inhibitory neurons can give rise to smooth maps of sensory input. In addition, we show that a humanoid brain-based-device (BBD) under the control of a spiking WTA neural network can learn to reach to target positions in its visual field, thus demonstrating the acquisition of sensorimotor coordination.
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