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J Appl Physiol 12: 390-394, 1958;
8750-7587/58 $5.00
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Changes of Electric Potentials of Skin Induced by Heat

F. B. Benjamin 1 and H. E. Clare 1

1 From the Department of Physiology, School of Medicine, University of Pennsylvania, Philadelphia, and the Aviation Medical Acceleration Laboratory, Naval Air Development Center, Johnsville, Pennsylvania

Skin potential measurements of rabbit and man were made by use of intradermal needle electrodes and recording with a self-balancing Brown potentiometer. Radiated heat energy decreased the potential and the degree of change apparently corresponded to the temperature at the recording site, one degree on the average being equal to 1.41 millivolts. Cold produced a change in the opposite direction. All changes were independent of nerve supply and blood flow, but they were markedly decreased by local infiltration with Novocain. These findings and the change of reaction produced by intradermal injection of magnesium, potassium and calcium salts are in agreement with the concept that the potential change under heat stimulation is due to a change of cellular permeability.

Submitted on November 29, 1957






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