Magnetic field effects on stress-induced analgesia in mice: modulation by light

Neurosci Lett. 1994 Dec 5;182(2):147-50. doi: 10.1016/0304-3940(94)90784-6.


Exposure of adult male CD-1 mice to restraint stress for 60 min increased their hindpaw-licking latency in a hot-plate test (50 degrees C); this analgesia was significantly reduced after exposure to a stable magnetic field (MF) (30-40 G) under white light. In contrast, MF exposure under either red light or total darkness did not alter stress-induced analgesia. Results suggest that in rodents perception of magnetism might involve a light-dependent mechanism as recently found for migratory birds and amphibians.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Analgesia*
  • Animals
  • Hindlimb
  • Light*
  • Magnetics*
  • Male
  • Mice
  • Neurophysiology
  • Stress, Physiological