Comparison of various synaptic plasticity VLSI circuits.

√ means that the outcomes of experiments can be closely mimicked using the circuit. √*means that the related study has not investigated the corresponding experiment, but according to its plasticity rule, it can most likely reproduce the expected experiment, though using a different set of plasticity parameters. √**means that the related study has not investigated the corresponding experiment, but according to its plasticity rule, it might be able to reproduce the expected experiment. ×means that the outcomes of experiments cannot be generated using the circuit.