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.
Del Seppia
C
C
Dipartimento di Scienze del Comportamento Animale e dell'Uomo Università di Pisa, Italy.
Ghione
S
S
Luschi
P
P
Papi
F
F
D000818:Animals; D001522:Behavior, Animal / Q000528:radiation effects; D010856:Columbidae / Q000502:physiology*; D004558:Electric Stimulation; D004562:Electrocardiography; D004574:Electromagnetic Fields; D004644:Emotions / Q000528:radiation effects; D006339:Heart Rate; D006930:Hyperalgesia / Q000209:etiology; D008280:Magnetics; D009619:Nociceptors / Q000503:physiopathology / Q000528:radiation effects; D010146:Pain / Q000503:physiopathology* / Q000517:prevention & control; D017288:Pain Threshold / Q000502:physiology / Q000528:radiation effects*; D013312:Stress, Physiological / Q000503:physiopathology