Write a note on Faradic current? Explain its physiological effects and indications.
FARADIC CURRENT: A Faradic current is a short-duration interrupted direct current with a pulse duration of 0.1-1 ms and a frequency of 50-100 Hz. Modified Faradic Currents: Modified faradic currents include the surging of current. they produce a near-normal tetanic like contractions and relaxation. The current is surged , so that intensity of impulses increases gradually. The circuit can b modified by giving surges of different durations and frequencies. Various forms of surges may b available, which are trapezoidal, triangular and saw-tooth impulses. Physiological Effects : The physiological effects of faradic currents are as follows: 1. Stimulation Of Sensory nerves: When a current of faradic type is applied to the body, a mild prickling sensation is felt. This is due to the stimulation of sensory nerves. The sensory stimulation causes a reflex vasodilation of the superficial blood vessels, thats why slight reddening of ski