Nerve membrane current noise: direct measurements under voltage clamp.
Fluctuations in the steady-state current of the membrane of the lobster giant axon have been measured under voltage-clamp conditions. These fluctuations have a power density spectrum that is inversely proportional to frequency. The magnitude of the fluctuations is determined largely by the potassium component of the membrane current.
D000818:Animals; D001369:Axons / Q000502:physiology*; D003445:Crustacea; D004553:Electric Conductivity; D008564:Membrane Potentials; D008722:Methods