This invention pertains to compact synaptic circuits and networks comprising compact synaptic circuits that exhibit functional characteristics of biological synapses and networks of synapses including, but not limited to, spike timing dependent plasticity ('STDP'). Temporal coincidence of pre- and post-synaptic action potentials across the synapses of the present invention induces proportional Hebbian synaptic weight updates. Networks of the synapses of the present invention operated according to the methods of this invention are designed to implement biological learning functions, such as STDP.
Compact Circuits and Adaptation Techniques for Implementing Adaptive Neurons and Synapses with Spike Timing Dependent Plasticity (STDP).