Ted, if soma.diam become even larger, I can't find any stimulus amplitude that make the axon fire first. I pass from soma firing first to none fire state.ted wrote:What happens if you make soma.diam even larger? Does the range of stimulus amplitudes that make the axon fire first become wider or narrower
However, if I decrease stimulus amplitude from 0.1 nA to 0.09 nA, the range of soma.diam that make the axon fire first become wider:
soma.diam <= 3, none fire
4 <= soma.diam <= 9, axon fire first
soma.diam >= 10, none fire
So, it seems that we obtain this behavior only with lower stimulus amplitudes and therefore, lower somatic diameters.
I'm wondering about the math behind this, soma has higher Cm (Cm=cm*surface) than axon, but also more current is flowing across its membrane.
I might think Cm delay the action potential occurrence, but more channels accelerate the action potential occurrence. So what is the deal between them?