CHANGES IN THE INFRADIAN RHYTHMIC OF SOME PHYSIOLOGICAL PROCESSES ARECONTROLLED BY EPIPHYSIS IN EPIPHYSECTOMIZED RATS EXPOSED TO VARIABLE MAGNETIC-FIELD OF EXTREMELY-LOW-FREQUENCY

The infradian rhythmic of the behavioral parameters, urination, body m ass and temperature in epiphysectomized rats exposed to a variable mag netic field of a frequency of 8 Hz and induction of 5 mu T influence w as studied. It was found that the removal of epiphysis leads to the re organization of power spectra of biorhythms, a rise of their amplitude s, and the development of desynchronosis. Further exposure of epiphyse ctomized rats to a variable magnetic field partially normalizes the am plitude-phase relations and decrease the disbalance of the processes. These data indicate the important role of epiphysis in the magnetorece ption and formation of the temporal structure of the organism and sugg est the existence of other structures sensitive to variable magnetic f ield.