Impedance of membrane and myoplasm during the action potential of frog muscle.
The transient imbalance of a Wheatstone bridge was used to estimate the changes in both membrane and myoplasmic impedance that occurred as an action potential propagated over a 1 mm length of a frog muscle fiber. It was also used to estimate the changes in the membrane impedance alone. Alterations in myoplasmic impedance that might have been predicted were not found.
D000200:Action Potentials; D000818:Animals; D001001:Anura; D002462:Cell Membrane / Q000502:physiology*; D004553:Electric Conductivity; D008722:Methods; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology*; D009210:Myofibrils / Q000502:physiology; D011894:Rana pipiens