title: Electronic system for the obtention of phase plane curves for action potentials.
abstract: This system is designed for the amplification of the bioelectrical signal, obtention of its derivative in respect to time, automatic brightness control for both beams of the oscilloscope, and stability. The system includes a central measuring section which is a modified Tektronix oscilloscope type 565. Automatic control of brightness as a function of sweeping speed allows photographic recordings.
mesh_terms: D000200:Action Potentials; D001331:Automation; D001674:Bioelectric Energy Sources / Q000295:instrumentation / Q000379:methods*; D009991:Oscillometry / Q000379:methods*; D010781:Photography; D011996:Records; D013997:Time Factors