Any process that stops, prevents, or reduces 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 +
regulation of action potential +
regulation of cardiac muscle cell membrane potential
regulation of membrane depolarization +
regulation of membrane hyperpolarization +
regulation of membrane potential in photoreceptor cell +