Hi,
May be a dumb question. What is the unit of the axial resistance (xraxial) in the Extracellular mechanism?
The documentation (http://www.neuron.yale.edu/neuron/stati ... racellular) mentions MOhms/cm. The way I understand this is megohms/cm = 10^6 ohms/cm. But I keep seeing huge numbers for xraxial (e.g. 6615 at the nodes of Ranvier of the model I'm working with), so that looks weird to me...
Can you help?
What is the unit of xraxial in the Extracellular mechanism?
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Re: What is the unit of xraxial in the Extracellular mechani
The documentation in the Programmer's Reference is correct. xraxial[0] and xraxial[1] are the extracellular longitudinal resistances in layers 0 and 1 of the extracellular mechanism, in units of megohms/cm. The corresponding extracellular resistances between adjacent nodes along a section equals the product of xraxial[0] or [1] and the distance between the nodes, taking conversion from um to cm into account as necessary. Section diameter has no effect on these values.Krollibrius wrote:What is the unit of the axial resistance (xraxial) in the Extracellular mechanism?
If you developed the model in question, you're responsible for the values of its parameters, so why did you choose those values? If you didn't, then someone else did, and you need to find out why they chose those values. Read the paper in which they describe the model to see what their basis for that values is. If it remains obscure, ask them.But I keep seeing huge numbers for xraxial (e.g. 6615 at the nodes of Ranvier of the model I'm working with), so that looks weird to me
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Re: What is the unit of xraxial in the Extracellular mechani
Thanks a lot Ted!
Indeed, I'm using someone's else model, so I'll investigate. I thought at first that the problem came from my understanding of the units.
Indeed, I'm using someone's else model, so I'll investigate. I thought at first that the problem came from my understanding of the units.