ghk · nernst

Miscellaneous

ghk()
Syntax:
ghk(v, ci, co, charge)
Description:

Return the Goldman-Hodgkin-Katz current (normalized to unit permeability). Use the present value of celsius.

mA/cm2 = (permeability in cm/s)*ghk(mV, mM, mM, valence)

nernst()
Syntax:

nernst(ci, co, charge)

nernst("ena" or "nai" or "nao", [x])

Description:

nernst(ci, co, charge)
returns nernst potential. Utilizes the present value of celsius.
nernst("ena" or "nai" or "nao", [x])
calculates nao/nai = exp(z*ena/RTF) for the ionic variable named in the string.

Celsius, valence, and the other two ionic variables are taken from their values at the currently accessed section at position x (.5 default). A hoc error is printed if the ionic species does not exist at this location.