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What is the difference?

What is the difference between an action potential and generator potential? (For A level Biology)
Action potentials are generated/ triggered by the depolarisation of a membrane, whereas generated potentials are generated in response to external stimuli and as a result of neurotransmitters released over synapses.
Hopefully this helps, i'm in yr 13 so still trying to understand as well!
Reply 2
Original post by enidghost
Action potentials are generated/ triggered by the depolarisation of a membrane, whereas generated potentials are generated in response to external stimuli and as a result of neurotransmitters released over synapses.
Hopefully this helps, i'm in yr 13 so still trying to understand as well!

Thankss
Action potentials are all-or-nothing, whereas generator potentials are graded potentials. This means that the bigger the stimulus, the bigger the generator potential. If the generator potential is great enough to depolarise the membrane to the threshold potential, an action potential will be fired.

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