Geomagnetic variables and behavior: LXXXIII. Increased geomagnetic activity and group aggression in chronic limbic epileptic male rats.

PX / PPseparate experiments the daily intragroup aggression was IC SYSTEM / * PPo different measures for male rats with limbic epilepsy ESSION / * PXre were statistically positive associations of moderate strength (rs about .50) for the frequency with severity of intermale aggression and daily geomagnetic activity. The intense aggression was most evident when the daily aa values for the northern hemisphere, one measure of daily global geomagnetic activity, exceeded 40 nT. Implications for homologous behaviors for human beings, as a species, are suggested.