The influence of a weak artificial magnetic 10 Hz field on the extinction of a conditioned flight reaction in rats.

36 three to four months old albino rats were conditioned to flee after the onset of an acoustic stimulus (1000 Hz). During the period of extinction of the flight reaction half of the animals were exposed to an alternating magnetic field (10 Hz, 0.03 mT peak to peak) for the time of investigation. These animals showed a significantly higher number of flight reactions than the control animals investigated without magnetic field, on the 4th, 5th, and 6th day of exposure (p less than 0.05).