Graded potential vs action potential. graded potentials – current flow, amplitude - post-synaptic potentials Action potentials Trigger zone threshold voltage All-or-none Channel activity Refractory period Coding for stimulus intensity.
- post-synaptic potentials
Na+ channel gates are unlatched (inactivation
Low resistance to current flow in large diameter axons. (wide water pipe)
Mammalian axons are very thin, and action potential are conducted quickly.