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Hi Ted, thanks for your fast reply (as always!). Let me figure out that I started with nseg=3 and dt=0.01 ms and then successively refined the time steps size, dt -> dt/3 while increasing nseg by 3, nseg -> nseg*3, and these are the results I got: //tend nseg dt soma.v(0.5) at t=10ms a) 10 1 0.01 -9...

Dear Neuroners, I try to solve an active model on a uniform cylinder and investigate the order of convergence one can achieve with the Crank-Nicolson method (CN). The channels in the active model are the classical Hodgkin-Huxley channels from the giant quid axon, but rescaled so as to have the resti...

Dear Neuron-Experts, I have a simple passive model (see the attached code below) consisting of a uniform cylinder with a alpha synapse located in the middle of the cyliner (therefore using an odd number of nseg). The synapse is activated after 1ms with a duration of 1 ms. I try to solve the model wi...

Hello Ted,

I had a look in the source code and found 'nnr_print_matrix' and similar functions (spFileMatrix).
After compiling Neuron with 'nrn_print_matrix' in the solve functions I can have a look at the questioned
matrix.

Anyway thanks for your hints above.
Best regards,
Dan

Dear ted, thank you for your fast reply. Of course, I agree with your statement The model consists of a ladder network of perfect capacitors that are connected at their ungrounded ends by axial resistors. At t = 0, all capacitors are initialized to the same potential. Before the synaptic conductance...

Hello dear forum users, is there any possibility to check or print the matrix which is assembled when solving a model with implicit time integration methods (CN, BE)? I know the Matrix class, which has a print method, but I am not sure whether this datatype is used for matrices evolving in implicit ...