Spike Timing Dependent PlASTICITY

A variant on the Hebb rule for synapses between spiking neurons, where the relative timing of pre and post-synaptic spikes determines whether the synapse is strengthened or weakened.   When the pre-synaptic neurons spikes before the post-synaptic neuron, the weight is strengthened.  When the pre-synaptic spike occurs after the post-synaptic spike, the weight is weakened. 


Source: Thivierge, Scholarpedia article.

TODO: Equation.   Link to article.  Note that if post and / or (?)  pre-synaptic neuron is not spiking, then this behaves like a clamped synapse.

Tau +/-

Time course of plasticity for LTP and LTDP

W +/-

Magnitude of change in synaptic efficacy for LTP and LTD.  Also called A+/A-.

Learning rate

Multiplied by delta-w in every time step to control how quickly the synapse changes.