The Nerve Impulse
- Created by: AnnaFHarrison
- Created on: 04-12-15 14:42
The Nerve Impulse |
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Overall summaryAn action potential is generated if a stimulus is strong enough for the generator potential to reach the threshold value. A stronger stimulus after this point does not produce to greater action potential, but more frequent impulses. After an action potential has passed and the membrane's potential difference is back to -70mV, the refractory period follows, meaning the neurone cell membrane cannot be immediately excited again. This ensures that action potentials don't overlap, and that they are unidirectional. |
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