Membrane Potential and the Passive Electrical Properties of the Neuron - The Passive Electrical Properties of the Neuron Affect Electrical Signaling

3 important questions on Membrane Potential and the Passive Electrical Properties of the Neuron - The Passive Electrical Properties of the Neuron Affect Electrical Signaling

What determines the rate of change in potential with time or distance?

  1. membrane capacitance
  2. membrane (channel) conductance
  3. intracellular axial resistance

Which two dimensions do the passive structures in a neuron influence?

Time course of signal
Speed of transmission

How does the capacitance influence the time course of a electrical signal?

To change potential (V) a current has to flow (Q/t = I). This relies on time and the magnitude of the capacitor (I*t/C).

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