Effect of magnetic micropulsations on the biological systems — A bioenvironmental study

During the last decade considerable interest has been evinced by scientists on the possible influence of earth's electromagnetic environment on human and animal physiology. While some studies on this topic have been reported from high magnetic latitudes — USSR and central Europe — no work has been done in very low latitude and equatorial regions. The present study, undertaken to fill this gap, has been carried out at the low latitude of Madras (Magnetic Dip ≅ 10°). Pulsating magnetic fields in the frequency range of 0.01 Hz to 20 Hz and with amplitudes of ±5 and ±50 gamma were impressed on test animals, normal human subjects and Yoga practitioners lying supine inside a 4-member Fanselau-Braunbeck coil system with the heads oriented in the four cardinal directions with respect to earth's magnetic field. The entire set of exposures of the test animals and humans was given under two ambient magnetic fields namely, against full local geomagnetic field of about 40,000 gamma and half this value. In the animals ECG, EEG, Tail Blood Flow and Respiration were recorded continuously on a polygraph. The biochemical tests carried out were postprandial blood sugar, serum cholesterol and plasma cortisol. Neurochemical assays of Noradrenaline, Adrenaline, Dopamine, Serotonin and 5 Hydroxy Indole Acetic acid were done on the brain tissue, myocardium and adrenal glands, immediately after complete set of exposures of the animals in all four orientations. Motor activity and rectal temperature were also noted before and after the exposures. The ‘Control’ animals were also subjected to exactly the same investigations as the test animals without, however, exposing them to the magnetic fields. These observations revealed some decisive changes in certain parameters for certain frequencies of the impressed field and also in specific orientations of the test animals. Similar studies carried out on normal human subjects and practitioners of Yoga and Meditation, also showed certain decisive changes in the electrophysiology, neurochemistry and biochemistry when oriented to North and East. The North orientation appeared to induce inhibition of brain electrical activity and associated neurochemical and biochemical changes, whereas the East orientation showed a response of calm, blissful alertness.