jonke_synapse – Synapse type for spike-timing dependent plasticity with additional additive factors.¶
Description¶
jonke_synapse is a connector to create synapses with spike time
dependent plasticity. Unlike stdp_synapse
, we use the update equations:
where
and
This makes it possible to implement update rules which approximate the rule stated in [1], and for examples, the rules given in [2] and [3].
Warning
This synaptic plasticity rule does not take precise spike timing into account. When calculating the weight update, the precise spike time part of the timestamp is ignored.
Parameters¶
lambda |
double |
Step size |
Wmax |
double |
Maximum allowed weight, note that this scales each weight update |
alpha |
double |
Determine shape of depression term |
mu_plus |
double |
Set weight dependency of facilitating update |
mu_minus |
double |
Set weight dependency of depressing update |
tau_plus |
double |
Time constant of STDP window, potentiation in ms |
beta |
double |
Set negative offset for both updates |
(tau_minus is defined in the postsynaptic neuron.)
Transmits¶
SpikeEvent