Abstract
A simple electronic device to discriminate amplitudes of action potentials was described. The principle of the impulse amplitude discrimination circuit (IADC) was to use the time lag in the falling phase of the action potential and the application of NOT-AND gate in the circuit. An application of IADC to the analysis of spontaneous discharges from the crayfish abdominal ganglion, and the detec-tion of microwave effect was presented.
