iaf_cond_exp_sfa_rr – Conductance based leaky integrate-and-fire model with spike-frequency adaptation and relative refractory mechanisms¶
Description¶
iaf_cond_exp_sfa_rr
is an implementation of a spiking neuron using
integrate-and-fire dynamics with conductance-based synapses, with additional
spike-frequency adaptation and relative refractory mechanisms as described in
[2], page 166.
Incoming spike events induce a postsynaptic change of conductance modelled by an exponential function. The exponential function is normalized such that an event of weight 1.0 results in a peak current of 1 nS.
Outgoing spike events induce a change of the adaptation and relative refractory
conductances by q_sfa
and q_rr
, respectively. Otherwise these conductances
decay exponentially with time constants tau_sfa
and tau_rr
, respectively.
See also [1].
Parameters¶
The following parameters can be set in the status dictionary.
V_m |
mV |
Membrane potential |
E_L |
mV |
Leak reversal potential |
C_m |
pF |
Capacity of the membrane |
t_ref |
ms |
Duration of refractory period |
V_th |
mV |
Spike threshold |
V_reset |
mV |
Reset potential of the membrane |
E_ex |
mV |
Excitatory reversal potential |
E_in |
mV |
Inhibitory reversal potential |
g_L |
nS |
Leak conductance |
tau_syn_ex |
ms |
Exponential decay time constant of excitatory synaptic conductance kernel |
tau_syn_in |
ms |
Exponential decay time constant of inhibitory synaptic conductance kernel |
q_sfa |
nS |
Outgoing spike activated quantal spike-frequency adaptation conductance increase in nS |
q_rr |
nS |
Outgoing spike activated quantal relative refractory conductance increase in nS |
tau_sfa |
ms |
Time constant of spike-frequency adaptation in ms |
tau_rr |
ms |
Time constant of the relative refractory mechanism in ms |
E_sfa |
mV |
Spike-frequency adaptation conductance reversal potential in mV |
E_rr |
mV |
Relative refractory mechanism conductance reversal potential in mV |
I_e |
pA |
Constant input current |
Sends¶
SpikeEvent
Receives¶
SpikeEvent, CurrentEvent, DataLoggingRequest