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The Action Potential

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Published on Oct 2, 2011

Meet the neuron. Voltage gradients and concentration gradients, resting membrane potential, depolarization and hyperpolarization... all explained here! Plus, explanations of refractory periods and how the axon overcomes the loss of signal strength over distance. WOW there's a lot here!

To watch the video on Equilibrium Potentials (which explains WHY Na+ and K+ want to move in the directions they do), click here: http://youtu.be/Kdnj0o1Wxqg

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