wb_cond_multisyn
wb_cond_multisyn - Wang-Buzsaki model with multiple synapses
Description
wb_cond_multisyn is an implementation of a modified Hodkin-Huxley model.
Spike detection is done by a combined threshold-and-local-maximum search: if there is a local maximum above a certain threshold of the membrane potential, it is considered a spike.
AMPA, NMDA, GABA_A, and GABA_B conductance-based synapses with beta-function (difference of two exponentials) time course.
References
See also
wb_cond_multisyn
Parameters
Name |
Physical unit |
Default value |
Description |
---|---|---|---|
g_Na |
nS |
3500.0nS |
Sodium peak conductance |
g_K |
nS |
900.0nS |
Potassium peak conductance |
g_L |
nS |
10nS |
Leak conductance |
C_m |
pF |
100.0pF |
Membrane Capacitance |
E_Na |
mV |
55.0mV |
Sodium reversal potential |
E_K |
mV |
-90.0mV |
Potassium reversal potentia |
E_L |
mV |
-65.0mV |
Leak reversal Potential (aka resting potential) |
V_Tr |
mV |
-55.0mV |
Spike Threshold |
refr_T |
ms |
2ms |
Duration of refractory period |
AMPA_g_peak |
nS |
0.1nS |
Parameters for synapse of type AMPA, GABA_A, GABA_B and NMDApeak conductance |
AMPA_E_rev |
mV |
0.0mV |
reversal potential |
AMPA_Tau_1 |
ms |
0.5ms |
rise time |
AMPA_Tau_2 |
ms |
2.4ms |
decay time, Tau_1 < Tau_2 |
NMDA_g_peak |
nS |
0.075nS |
peak conductance |
NMDA_Tau_1 |
ms |
4.0ms |
rise time |
NMDA_Tau_2 |
ms |
40.0ms |
decay time, Tau_1 < Tau_2 |
NMDA_E_rev |
mV |
0.0mV |
reversal potential |
NMDA_Vact |
mV |
-58.0mV |
inactive for V << Vact, inflection of sigmoid |
NMDA_Sact |
mV |
2.5mV |
scale of inactivation |
GABA_A_g_peak |
nS |
0.33nS |
peak conductance |
GABA_A_Tau_1 |
ms |
1.0ms |
rise time |
GABA_A_Tau_2 |
ms |
7.0ms |
decay time, Tau_1 < Tau_2 |
GABA_A_E_rev |
mV |
-70.0mV |
reversal potential |
GABA_B_g_peak |
nS |
0.0132nS |
peak conductance |
GABA_B_Tau_1 |
ms |
60.0ms |
rise time |
GABA_B_Tau_2 |
ms |
200.0ms |
decay time, Tau_1 < Tau_2 |
GABA_B_E_rev |
mV |
-90.0mV |
reversal potential for intrinsic current |
I_e |
pA |
0pA |
constant external input current |
State variables
Name |
Physical unit |
Default value |
Description |
---|---|---|---|
V_m |
mV |
-65.0mV |
Membrane potential |
V_m_old |
mV |
E_L |
Membrane potential at previous timestep for threshold check |
refr_t |
ms |
0ms |
Refractory period timer |
is_refractory |
boolean |
false |
|
Inact_h |
real |
alpha_h_init / (alpha_h_init + beta_h_init) |
Inactivation variable h for Na |
Act_n |
real |
alpha_n_init / (alpha_n_init + beta_n_init) |
Activation variable n for K |
g_AMPA |
real |
0 |
|
g_NMDA |
real |
0 |
|
g_GABAA |
real |
0 |
|
g_GABAB |
real |
0 |
|
g_AMPA$ |
real |
AMPAInitialValue |
|
g_NMDA$ |
real |
NMDAInitialValue |
|
g_GABAA$ |
real |
GABA_AInitialValue |
|
g_GABAB$ |
real |
GABA_BInitialValue |
Equations
Source code
The model source code can be found in the NESTML models repository here: wb_cond_multisyn.