Nerves, the heart, and the brain are electrical. How do these things work? This course presents fundamental principles, described quantitatively.
First we looked at Na-K pumps to find the sources of electrical energy. Second
we looked at channels and the HH model to see how concentration gradients and
channel selection made electrical pulses called "action potentials". Then in
week 5 we examined how voltage changes in one place produced voltages and
currents in other places. Now finally, here in week 6, we have all the parts
needed for propagation. This process is the one that really matters, the
electrical mechanism underneath how nerves send signals, how muscles know to
contract, heart beats, and even thought.
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