Units used in NEURON
The following table lists the units that NEURON uses by default.
Point processes and distributed mechanisms may use other units,
e.g. for certain concentrations and physical dimensions.
The default behavior of GUI tools that manage parameters
and monitor variables is to display the units next to the
variable name, e.g. t (ms), L (um), Ra (ohm-cm), gkbar_hh (S/cm2).
Users can also determine what units have been assigned to
mechanism-specific variables by examining the .mod file
that defines the mechanism.
| Category |
Variable |
Units |
| Time |
t |
[ms] |
| Voltage |
v |
[mV] |
| Current |
i |
[mA/cm2] (distributed)
[nA] (point process) |
| Concentration |
ko, ki, etc. |
[mM] |
| Specific capacitance |
cm |
[uf/cm2] |
| Length |
diam, L |
[um] |
| Conductance |
g |
[S/cm2] (distributed)
[uS] (point process) |
| Cytoplasmic resistivity |
Ra |
[ohm cm] |
| Resistance |
Ri( ) |
[106 ohm] |
Copyright © 2002 - 2008 by N.T. Carnevale
and M.L. Hines, All Rights Reserved.