HIGH AND LOW FREQUENCY ELECTRICAL RESISTANCE CHANGES IN DYING VOLUNTARY MUSCLE OF RABBITS

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Abstract
In 10 anesthetized rabbits, each immersed in a constant temp. air bath within a box insulated for temp. and electricity, each with electrodes sewed inside the skin, electrical resistance of voluntary muscle was measured at intervals before and after death. After death of the animal body temp. was maintained by a constant temp. air bath. Resistance measurements were made with high frequency alternating current of 1,000,000 cycles per second and low frequency current of 1,000 cycles per sec. On death of the animal the high frequency resistance remained unchanged for at least 36 hrs. while the low frequency resistance at first increased for 2-10 hrs., reaching a value from 25 to 100% above that which is found in the living animal; thereafter the value steadily decreased. The resistance and capacity measurements made with low frequency resistance indicate a progressive cell membrane destruction as autolysis takes place.

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