positive regulation of synaptic plasticity activation of synaptic plasticity up regulation of synaptic plasticity stimulation of synaptic plasticity GO:0031915 biological_process A process that increases synaptic plasticity, the ability of synapses to change as circumstances require. They may alter function, such as increasing or decreasing their sensitivity, or they may increase or decrease in actual numbers. up-regulation of synaptic plasticity upregulation of synaptic plasticity regulation of synaptic plasticity