Hodgkin-Huxley Nerve Model
(
U
,
V
1
)-phase diagram of the Hodgkin-Huxley equation; trajectory approaching a limit cycle.
U
(0)=-5,
V
1
(0)=0.31,
V
2
(0)=0.05,
V
3
(0)=0.6 and
I
a
=-10.
