This applet simulates the Hodgkin-Huxley Nerve Model for one cell using various
subthreshold stimulation frequences which can lead to dependent responses including chaos.
The S1 and S2 currents are of the form A+B*Sin(w*t). The three values for the currents in the applet boxes are A,B and W respectively.
The model can be found in J. Physiol. Vol 117 500-540, 1952 by A.L. Hodgkin and A.F. Huxley.