Circadian Rhythms in Plants, Insects and Mammals Exposed to ELF Magnetic and/or Electric Fields and Currents
Abstract
Proceeding on the basis of knowledge that circadian rhythms are a predictable source of biological variability with characteristics that can change in response to potentially harmful agents, studies were performed on plants, insects and mammals in the presence and absence of ELF fields and currents. Specifically, circadian rhythms were examined in leaf movements of Albizzia julibrissin (silk tree), in susceptibility of Tribolium confusum (flour beetle) to an insecticide, in body temperature and drug resistance of Mus musculus (mouse). In the latter animal body weight, food consumption, the estrus cycle and survival were also investigated. Field conditions ranged from 45 to 75 Hz, 0.4 to 2 gauss and 1 to 180 v/m. Duration of field exposure varied from a few days to several months. Such exposure was consistent with the demonstration of statistically significant circadian rhythms.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 28, 1975
- Accession Number
- ADA019958
Entities
People
- Franz Halberg
- Laurence Cutkomp
- Robert Sothern
- Walter Nelson
Organizations
- University of Minnesota