Re: Izhikevich neuron has no stable state

Hello,

Though I said this was somewhat complex, it actually isn't (things are more complex for the "post-synaptic" neuron of a spiking neuron, which must convert a spike into a number, but that's not at issue here).   The input current to the Izhikevich neuron is just weighted input.  So, assuming the weight is set at its default value of 1, then yes, the activation of the clamped neuron in your example just is the current I.

So, if you are getting different results in Simbrain than you do with the matlab script, then it may be something with the current implementation of the Izhikevich model (sigh...).  

There are a few things I can think of that might be causing the discrepancy, but I have not looked at it myself and alas, my next few days are pretty busy.  I'll try to have a look this weekend.  If you're itching to figure this out before then email me or post another message and I can at least tell you what my suspicions are.

- Jeff