Warning
This is A PREVIEW for NEST 3.0 and NOT an OFFICIAL RELEASE! Some functionality may not be available and information may be incomplete!
stdp_triplet_connection – Synapse type with spike-timing dependent plasticity (triplets)¶
Description¶
stdp_triplet_synapse is a connection with spike time dependent plasticity accounting for spike triplet effects (as defined in 1).
Notes: - Presynaptic traces r_1 and r_2 of 1 are stored in the connection as
Kplus and Kplus_triplet and decay with time-constants tau_plus and tau_plus_triplet, respectively.
Postsynaptic traces o_1 and o_2 of 1 are acquired from the postsynaptic neuron states Kminus_ and triplet_Kminus_ which decay on time-constants tau_minus and tau_minus_triplet, respectively. These two time-constants can be set as properties of the postsynaptic neuron.
This version implements the ‘all-to-all’ spike interaction of 1. The ‘nearest-spike’ interaction of 1 can currently not be implemented without changing the postsynaptic archiving-node (clip the traces to a maximum of 1).
Parameters¶
tau_plus |
real |
Time constant of short presynaptic trace (tau_plus of 1) |
tau_plus_triplet |
real |
Time constant of long presynaptic trace (tau_x of 1) |
Aplus |
real |
Weight of pair potentiation rule (A_plus_2 of 1) |
Aplus_triplet |
real |
Weight of triplet potentiation rule (A_plus_3 of 1) |
Aminus |
real |
Weight of pair depression rule (A_minus_2 of 1) |
Aminus_triplet |
real |
Weight of triplet depression rule (A_minus_3 of 1) |
Wmax |
real |
Maximum allowed weight |
States |
||
Kplus |
real |
Pre-synaptic trace (r_1 of 1) |
Kplus_triplet |
real |
Triplet pre-synaptic trace (r_2 of 1) |
Transmits¶
SpikeEvent