Browse 6,486 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 2,816 studies in Whole Body / General
Unknown authors · 1967
Surface anodal polarization depolarizes deep pyramidal neurons while hyperpolarizing superficial elements. Surface cathodal polarization produces the opposite effects. Anodal polarization of the ventricular surface hyperpolarizes hippocampal pyramidal neurons, whereas cathodal polarization depolarizes them.
Unknown authors · 1967
The technique was described as general, simple, and permitting fast and accurate measurement. For freshly picked samples with about 65% moisture content, the dielectric constant was measured approximately 29-7j. As samples dried out, the dielectric constant diminished to about 1.5 per g² at 8-10 GHz.
J. A. Tanner, C. Romero-Sierra, S. J. Davie · 1967
Unknown authors · 1967
Unknown authors · 1967
The document is a final report issued by DASA in 1952. It describes a low field electron spin resonance study of the effect of radiation in living animals.
S. W. Rosenthal, L. Birenbaum, G. M. Grosof, M. M. Zaret · 1967
Sol M. Michaelson et al. · 1967
M. Maroncelli, G. Ferraro · 1967
Russell L. Carpenter, Clair A. Van Ummersen · 1967
BUSCO, R. · 1967
F.A. Kolesnik · 1967
Julius H. Fanney Jr., Charles H. Powell · 1967
C. Christianson, A. Rutkowski · 1967
Sol M. Michaelson, Roderick A. E. Thomson, Joe W. Howland · 1967
The research followed the National Society for Medical Research Principles of Laboratory Animal Care and the American Physiological Society Guiding Principles in the Care and Use of Animals. Dosimetry and instrumentation evaluation were not objectives of the study.
McCoy, AS · 1967
George A. Hall, William A. Schlegel · 1967
Researchers compared the bursting strength of rabbit sclera after cryosurgery, diathermy, or no treatment using a device that measured the force needed to rupture the tissue. Six rabbits received paired treatments: cryosurgery in one eye with the fellow eye as control, diathermy in one eye with the fellow eye as control, or cryosurgery in one eye and diathermy in the other. Six weeks after treatment, diathermy-treated sclera required about half the force to rupture compared with control sclera, while cryosurgery-treated sclera showed only a slight reduction.
A. M. Kadoum, H. J. Ball, S. O. Nelson · 1967
Researchers exposed yellow mealworm larvae to radiofrequency electric fields at sublethal levels and observed the resulting adults. Exposures during the sixth instar caused leg malformations and absences, while fifth-instar exposures did not affect leg development. Longer exposure times reduced the number of imaginal legs that developed, and exposures later in the last instar caused more severe damage.
Robert O. Becker, David G. Murray · 1967
Paul D. Pederson Jr., Arnold W. Blomquist · 1967
R. A. E. Thomson et al. · 1967
I. A. Kolomoitseva, G. D. Kusnetsova, M. S. Myslobodsky · 1967
Researchers conducted acute and chronic experiments on alert rabbits to study the restoration cycle of responses evoked by two to seven stimuli and single unit responses to single and low-frequency rhythmic photic stimuli. The organization of the rhythmic response depended on interaction between the evoked potential and the slow negative wave of the previous response. The augmentation phase resulted from coincidence of the stimulus with the summit of the previous slow negative wave and a facilitated evoked potential. During rhythmic spindle discharges most visual cortex elements were inhibited while a smaller part was activated. The authors assumed that the direction of unit activity changes depends on the initial polarization level of cortical cell membranes.
Ban K · 1967
A. W. Guy, J. F. Lehmann · 1967
Researchers built phantom models from epoxy resins loaded with carbon and titanium dioxide powder that matched the geometry, dielectric constant, and electrical conductivity of human tissue structures. The models were pre-cut, reassembled, exposed to electromagnetic energy for five to thirty seconds, then quickly disassembled so temperature patterns could be recorded with a Sierra Philico thermograph camera. Thermograms of a model with stratified fat and muscle layers exposed to 750 mc energy showed reduced heating in the fat layer and intense heating in the muscle near the fat-muscle interface. The measured temperature distributions closely matched theoretical heating curves except for rounding of extreme nulls and peaks due to conduction effects.
D. A. Copson · 1967
Biological effects of microwaves have been useful in diathermy and related applications. A vastly broadened use of microwave energy in communications has demanded knowledge of biological hazards. Most investigations reported deal with the thermic mechanism of absorption of microwave energy.
Garry D. Hanneman, D.V.M. · 1967