A circuit for measuring peak potential.
The measurement of maximal potential is an integral part of several biological signal analyzers. We designed a circuit, which, unlike previously described devices that perform this function, is capable of picking a positive peak at below ground potentials or a negative peak above ground. Other features include user-selected decay characteristics, allowing beta-to-beat following and rejection of base-line noise. The circuit was implemented and tested with intracellular signals recorded from cardiac Purkinje fibers.
D000200:Action Potentials; D000818:Animals; D004594:Electrophysiology / Q000295:instrumentation*; D006321:Heart / Q000502:physiology*; D008564:Membrane Potentials; D008722:Methods; D011690:Purkinje Fibers / Q000502:physiology