. "Any process that activates or increases the frequency, rate or extent of establishment or extent of a membrane potential, the electric potential existing across any membrane arising from charges in the membrane itself and from the charges present in the media on either side of the membrane." . . "positive regulation of membrane potential" . "activation of membrane potential" . "elevation of membrane potential" . "stimulation of membrane potential" . "up regulation of membrane potential" . "up-regulation of membrane potential" . "upregulation of membrane potential" . . . . .