Hello! I am struggling to find what exactly are the equations that NEURON integrates when I create a section with just one segment, insert hh, insert Exp2Syn and insert IClamp.

Code: Select all

```
soma = h.Section(name='soma')
soma2 = h.Section(name='soma2')
soma.insert('hh')
soma2.insert('hh')
syn = h.Exp2Syn(0.5, sec=soma2)
syn.e = 0
syn.tau1 = 1
syn.tau2 = 3
net_con = h.NetCon(soma(0.5)._ref_v, syn, 0, 5, 0.07)
stim = h.IClamp(soma(0.5))
stim.delay = 1
stim.dur = 5
stim.amp = 20
```

I have read many parts of Hines & Carnevale 1997 at

https://www.neuron.yale.edu/neuron/stat ... /nctoc.htm), but I still don't understand how does neuron compute the voltage in the compartment including synapses and external inputs like IClamp. Is it including it at the equation 2 on the right side of the equal sign in this part of the explanation

https://www.neuron.yale.edu/neuron/stat ... /nc3p1.htm ?

I mean: c dv/dt + i_ion = sum[(v_k-v_j)/r_jk] + Isyn + Iext . Is that it?

And what happens in the case of a single compartment, as the case I illustrated? Is (v_k-v_j)/r_jk=0 in this case?