Psychology / Unit 2 Psych 0157 short lesson, about 20 seconds
The All-or-None Law
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The idea
The all-or-none law states that a neuron either fires at full strength or does not fire at all.
In practice
A barely-suprathreshold input and a very strong input produce action potentials of identical size.
Where people slip
Intensity is coded by how often neurons fire and how many of them fire, never by how hard one fires.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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