What is Action Potential?

Alie Astrocyte explains action potentials, starting with a recap of resting potential. She describes how a signal from another neuron can cause depolarization, where sodium ions rush into the cell, making it more positively charged. This signal moves down the neuron like a wave. After the signal passes, the cell repolarizes and hyperpolarizes, returning to its resting state. The entire process takes less than a millisecond. Alie hints at the next episode, which will cover how signals move between neurons.

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