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Problem 1:

Show that, if k >1, then (1 - e -x)k has an inflection point, however (e -x)k does not.

Problem 2:

Plot the null clines of the Hodgkin-Huxley fast subsystem. Show that vr and ve in Hodgkin-Huxley fast subsystem are steady states, while vs is a saddle point. find out the stable manifold of saddle point and find out sample trajectories in the fast phase-plane, demonstrating threshold effect.

Problem 3:

Plot the null clines of fast-slow Hodgkin-Huxley phase-plane and find out a complete action potential.

Problem 4:

Assume that in the Hodgkin-Huxley fast-slow phase-plane, v is slowly diminish to v*< v0 (where v0 is the steady state), held there for a considerable time, and then released. Illustrate what happens in qualitative terms, i.e., without actually calculating the solution. This is called anode break excitation. What happens if v is instantaneously decreased to v*and then released immediately? Why do these two solutions differ?

Problem 5:

Solve the full Hodgkin-Huxley equations numerically with a variety of constant current inputs. For what range of inputs are there self-sustained oscillations? Construct bifurcation diagram.

Computer Engineering, Engineering

  • Category:- Computer Engineering
  • Reference No.:- M91245

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