[nengo-user] Achieving ensemble activity sparsity

[Claus Agerskov]

Hi
Inspired by the high sparsity of active neurons in the hippocampal formation, especially the dendrate gyrus, I want to create a neural network that has ensembles with neural activity limited to some percentage of the present neurons. Of course such can be done by making a self-inhibiting connection, and adjusting the weight until the desired number of neurons are active, given a certain input. I am wondering however if there is a better way to do this.
The classic solution is k-WTA but Eliasmith is speaking against it in "How to Build a Brain", so I am wondering what kind of solution is more biologically realistic.
Regards 
Claus Agerskov, Technical University of Denmark, Biophysics and Fluids group
 		 	   		  
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