By James C. Lin (auth.), James C. Lin (eds.)
Hardly any phenomenon within the sleek atmosphere is as ubiquitous as electromagnetic fields and waves. we've discovered to appreciate the actual features of those strength kinds, and now we have utilized them in ample how one can enhance our methods of existence and our criteria of residing. in addition, we've got come to rely on them for healthiness, security, info, comfOli, and conveyance. except their meant roles, those electromagnetic fields and waves have other results that could impression the actions of residing organisms. the results produced depend upon many actual, chemical, and organic components. they are grossly obvious and visual quickly after publicity of the dwelling organism or they won't seem to have motivated the organism in any respect upon informal exam. Even then, there is refined alterations that are merely detectable upon cautious chemical or microscopic learn, or that are obvious purely after a substantial time hold up. however, our figuring out of the interplay of electromagnetic fields with residing structures is advancing in a variety of topical parts. This bi-annual sequence with invited stories via well-known leaders of their respective specialties, will current development to this point in key parts of study and scholarship. The guiding philosophy of this project is the presentation of built-in, identified, and confilmed phenomenological observations, simple mechanism of interactions, and purposes in biology and medication, in addition to views on present subject matters of interest.
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Chronic exposure (2 h/day for 4-6 weeks at 90500 V rms/m) produced abnormal patterns including high amplitude spindles, bursts, and suppression of normal activity (shift to pattern of lower frequencies) when recorded within a few hours after exposure. In an experiment by Chou and Guy [1979a], no significant change in electrical activit~ from the hypothalamus was detected in rabbits exposed to 2450-MHz RFR at 100 mW/cm (SAR at electrode -25 W/kg). In a chronic exposure experiment, Chou et al. 5 mW/cm2 (2 h/day, 5 days/week for 90 days).
Such changes could have important implications on an animal's functional state. The changes in neurotransmitter receptors enable an animal to adapt to the repeated perturbation of function. On the other hand, since changes in receptor properties can last for a long time (days to weeks), an animal's normal physiological and behavioral functions will be altered by such changes. The central nervous system of all vertebrates is enveloped in a functional entity known as the blood-brain barrier, due to the presence of high-resistance tight junctions between endothelial cells in the capillaries of the brain and spinal cord.
In a more recent study [Lange and Sedmak, 1991], using a similar exposure system, a dose(power density) dependent increase in the entry of Japanese encephalitis virus into the brain and lethality was reported in mice after 10 min of RFR exposure (power densities 1O-S0 mW/cm2, SARs 24-98 W/kg). The blood-brain barrier is a natural barrier against the penetration of this virus to the brain. The authors also speculated that the high-intensity RFR caused an increase in pinocytosis of the capillary endothelial cells in the central nervous system and the viruses were carried inside by this process.
Advances in Electromagnetic Fields in Living Systems by James C. Lin (auth.), James C. Lin (eds.)