6.021/Notes/20061030
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HodgkinHuxley
 state variables: m,n,h,V_{m}
 using m(t_{0}),n(t_{0}),h(t_{0}),V_{m}(t_{0}) and the input J_{m}(t) for t > t_{0}, we can propagate into the future to calculate all of the variables
 For example,
 To calculate next value of the membrane potential, solve the circuit model
 If you run the HH model by appyling a current, you get an action potential!
 Response to current pulse:

 (positive feedback)
 Both m and V_{m} increase about exponentially until V_{m} about the max (V_{Na})
 Negative feedback until membrae potential drops to below rest
 n & h need to be reset to original values. Explains why action potential is refractory
 Put HH model of membrane behavior into core conductor model
 assume constant speed of propagation
 As speed of propagation not part of HH model, guess/fit
 The HodgkinHuxley model can account for decrementfree conduction