Exposure to oscillating magnetic fields influences sensitivity to electrical stimuli. I. experiments on pigeons

The comparison of two measurements of the pigeon threshold for electrical stimuli, performed 2 h apart, reveals stress‐induced analgesia as a result of stressful manipulations between the two tests. When pigeons are exposed to a weak, oscillating magnetic field between the two measurements, the analgesic response is inhibited and a hyperalgesic effect is recorded. The present findings are in agreement with previous studies showing that magnetic treatments may alter pigeons' emotional state and some of their behavioral patterns. © 1995 Wiley‐Liss, Inc. Copyright © 1995 Wiley‐Liss, Inc., A Wiley Company