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i already tried to but the sinus-curve in the xtra.mod File. I changed the line: ex = is*rx*(1e6) to: ex = is*rx*(1e6)*sin(2*3.141*t*20000 so just adding the "*sin()" part. 20.000 is the frequency (and 2*PI*t for really creating a sinus) the output shows a sinus-function. (so far so good) ...

actually what i want to do is: to set an AC on the bipolar electrode(s). did you ever try a set like that?i mean if the bipolar set in the calcrxc.hoc works - the only thing i need to do is to set the STIM in an AC one, right? Yep, that's all you have to do. is there a elegant why to generate this ...

hey ted! ModelC does the same. What's ModelC? ModelC is a kind of predecessor of MRG (McIntyre). it already worked with the double cable as well but didnt divide the internodal compartments as McIntyre did. so it didnt really match the afterpotentials - but had a way better computation-time. thanks ...

1) if i want to change the eletrical properties of the substance in which is surrounding the fiber it should be enough to change the values of extracellular, right? What electrical properties of the conductive medium do you want to change, and which "values of extracellular" do you propos...

Im using the Code as ChrisR posted it... i think it works out for me (changed the models from McNeil in ModelA, B and C described by Richardson as predecessor of the MRG Modell) However i have a couple of questions: 1) if i want to change the eletrical properties of the substance in which is surroun...

Hey Guys! Im writing on my thesis and need a chapter about extracellular stimulation in neuron i read some papers about that topic, all the forum-threads and looked into the examples provided (extracellular_stim_and_rec and ecstim). the problem is that i think i just dont get it right - still... let...

Hey Everybody! I was looking for a Model (or actually 3) which are described to be used in the following paper: AG Richardson et al. Modelling the Effects of Electric Fields on Nerve Fibres: Influence of the Myelin Sheath, MBEC, 38 (4), 2000, 438-446. i was looking for them on the internet now the w...

Hi. Can i access variables stepwise (and sum them) when i dont have explicit access to the .mod files? My problem is, that i want to sum up i_cap and i_membrane. What i really need is, the integral of the two currents. (but the sum will do anyway) So in one of my models i just added another variable...