Fig. 8: Winner-take-all dynamics with three sub-clusters implanted in the network. | Nature Communications

Fig. 8: Winner-take-all dynamics with three sub-clusters implanted in the network.

From: Stable recurrent dynamics in heterogeneous neuromorphic computing systems using excitatory and inhibitory plasticity

Fig. 8

a Random recurrent E/I network with three neural ensembles (size = 50, green, orange and purple neurons). The stimulation protocol (top left) shows how different sub-clusters receive inputs over the course of emulation. b Firing rates of all clusters when each cluster is stimulated with either high (300 Hz) or low frequency (60 Hz) inputs. The cluster receiving the high-frequency input dominates the competition. We demonstrate that no special tuning is necessary to achieve this winner-takes-all (WTA) phenomenon. c Raster plot illustrating spike activity for all neurons in different clusters. d Activity in an extended version of the memory network with 10 sub-clusters, each with 20 neurons. Here every cluster is stimulated independently, showing that up to 10 memories can be individually recalled.

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