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. 2014 Mar 13;9(3):e90480. doi: 10.1371/journal.pone.0090480

Table 3. Definition and notation for the key HHM variables.

Notation Variable description and units Typical value (*1
Potentials, in Inline graphic:
Inline graphic Membrane voltage (*3
Inline graphic Membrane resting voltage −77
Inline graphic Inline graphic Nernst potential −90
Inline graphic Inline graphic Nernst potential 60.0
Inline graphic Leak reversal potential −70
Membrane capacitance, in Inline graphic:
Inline graphic Membrane capacitance 1
Maximum (*2 conductances, in Inline graphic:
Inline graphic Inline graphic conductance 150
Inline graphic Inline graphic conductance 300
Inline graphic Leak conductance 0.033
Currents, in Inline graphic:
Inline graphic Inline graphic Ionic Current (*4 Inline graphic
Inline graphic Inline graphic Ionic Current Inline graphic
Inline graphic Leak Current Inline graphic

Notes:

(*1 Typical values are for the Inline graphic model, [20]; see also Table 4.

(*2 These are dependent on (grow with) temperature, the values listed are for Inline graphic.

(*3 Membrane voltage is either at its resting value Inline graphic; is depolarized (grows due to stimulation and/or activated sodium Inline graphic ion channels); is repolarized (decays back to Inline graphic, due to the potassium Inline graphic ion channels).

(*4 Ionic currents depend on both the membrane voltage and the dynamic state of the ion channels’ gates. See Table 4.