time
20
conductances
versus
time
injected
current
4
.
51
subcritical
Andronov
-
Hopf
bifurcation
initial
n
0
initial
voltage
-
20
0
5
10
15
20
0
.
0
0
.
2
0
.
4
0
.
6
0
.
8
1
.
0
time
(
ms
)
activation
variables
activation
variables
versus
time
