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Biomedical subjects

A H Frey

Publications and source records attributed to A H Frey.

At least 19 recordsLinked to original sources
PubMed1998

Headaches from cellular telephones: are they real and what are the implications?

There have been numerous recent reports of headaches occurring in association with the use of hand-held cellular telephones. Are these reported headaches real? Are they due to emissions from telephones? There is reason to believe that the answer is "yes" to both questions. There are several lines of evidence to support this conclusion. First, headaches as a consequence of exposure to low intensity microwaves were reported in the literature 30 years ago. These were observed during the course of microwave hearing research before there were cellular telephones. Second, the blood-brain barrier appears to be involved in headaches, and low intensity microwave energy exposure affects the barrier. Third, the dopamine-opiate systems of the brain appear to be involved in headaches, and low intensity electromagnetic energy exposure affects those systems. In all three lines of research, the microwave energy used was approximately the same--in frequencies, modulations, and incident energies--as those emitted by present day cellular telephones. Could the current reports of headaches be the canary in the coal mine, warning of biologically significant effects?

Blood-Brain Barrier↗
PubMed1996

Enhancing contaminant control to mitigate aeroallergies.

BACKGROUND: Modern construction techniques such as sealing buildings and reducing air exchange rates to conserve energy often increase indoor air contaminant concentrations, a problem for people with asthma and aeroallergies. Further, a large proportion of the contaminants that are found in indoor air do not reach the filters because the motion of particulates less than about 3 microns in size, 99% of all particulates, is determined more by the normal electrical forces in a room than by the air currents. OBJECTIVE: To determine whether the natural process of aerosol coagulation, which increases particle size, can be speeded-up, thereby enhancing the effectiveness of air currents in returning contaminants to the filters and improving contamination control. METHOD: A set of four experiments using various methods involving particulate and gaseous contaminants are presented. RESULTS: Statistically significant differences in room contaminant load were found in the various experiments as a function of the treatment used. CONCLUSIONS: The effectiveness of filters can be significantly enhanced and the concentration of contaminants in indoor air can be significantly reduced in a straight-forward direct way. The physics underlying the phenomena is described. The implications for allergy and asthma patients are significant, for we now have a new means to substantially improve indoor air quality.

Aerosols↗
PubMed1993

Electromagnetic field interactions with biological systems.

This is a report on Symposia organized by the International Society for Bioelectricity and presented at the 1992 FASEB Meeting. The presentations summarized here were intended to provide a sampling of new and fruitful lines of research. The theme topics for the Symposia were cancer, neural function, cell signaling, pineal gland function, and immune system interactions. Living organisms are complex electrochemical systems that evolved over billions of years in a world with a relatively simple weak magnetic field and with few electromagnetic energy emitters. As is characteristic of living organisms, they interacted with and adapted to this environment of electric and magnetic fields. In recent years there has been a massive introduction of equipment that emits electromagnetic fields in an enormous range of new frequencies, modulations, and intensities. As living organisms have only recently found themselves immersed in this new and virtually ubiquitous environment, they have not had the opportunity to adapt to it. This gives us, as biologists, the opportunity to use these electromagnetic fields as probes to study the functioning of living systems. This is a significant opportunity, as new approaches to studying living systems so often provide the means to make great leaps in science. In recent years, a diversity of biologists have carried out experiments using electromagnetic fields to study the function of living cells and systems. This approach is now becoming quite fruitful and is yielding data that are advancing our knowledge in diverse areas of biology.

Animals↗
PubMed1985

Differential apomorphine effects.

Two dose levels of apomorphine were used with the tail-flick assay. A low dose of apomorphine significantly increased tail-flick latency, whereas a high dose significantly decreased tail-flick latency. Such differential effects have bearing on the reported complex interaction between the dopamine and endorphin systems in the brain.

Animals↗
PubMed1985

Data analysis reveals significant microwave-induced eye damage in humans.

Appleton and McCrossan undertook a study for the U.S. Army at Ft. Monmouth to determine if microwave exposure would cause cataracts. They concluded: "The comparison showed the groups (microwave exposed vs. not exposed ) to be essentially the same and did not support the hypothesis that human cataracts are being caused by chronic exposure to microwaves in the military environment in this country." There are three major flaws in Appleton and McCrossan's work. First, the exposed group likely included people with little or no exposure. This would tend to minimize the possibility of finding microwave effects. Secondly, their control group consisted of people working with equipment known to cause eye damage. This also would tend to minimize the possibility of finding microwave effects. Thirdly, and most important, they did not do a statistical analysis on their data. When the writer did one, it was found that Appleton and McCrossan have a statistically significant difference between groups, with the microwave exposed showing more lens opacities than would be expected by chance. Thus, their conclusion should have been the opposite of what they stated. It is the uncritical acceptance of negative biological studies of non-ionizing radiation, such as this, that has contributed to the distortion of science in this area of research and has stimulated public opposition to the installation of such energy sources.

Adult↗
PubMed1985

Distance perception with holographically reconstructed objects.

It has been assumed that a holographically reconstructed object is seen as though it is the actual object, including that it is seen at the distance of the actual object when it was holographed. A psychophysical experiment was carried out with seven subjects to test this assumption. The results clearly show that the perceived distances of holographically reconstructed objects are not equivalent to the perceived distances of actual objects. Thus a fundamental assumption in holography has not been supported by experimental data.

Distance Perception↗
PubMed1985

Response facilitation: implications for perceptual theory, psychotherapy, neurophysiology, and earthquake prediction.

There have been numerous naturalistic observations and anecdotal reports of abnormal animal behavior prior to earthquakes. Basic physiological and behavioral data have been brought together with geophysical data to develop a specific explanation to account for how animals could perceive and respond to precursors of impending earthquakes. The behavior predicted provides a reasonable approximation to the reported abnormal behaviors; that is, the behavior appears to be partly reflexive and partly operant. It can best be described as agitated stereotypic behavior. The explanation formulated has substantial implications for perceptual theory, psychotherapy, and neurophysiology, as well as for earthquake prediction. Testable predictions for biology, psychology, and geophysics can be derived from the explanation.

Animals↗
PubMed1979

Holographic assessment of a hypothesized microwave hearing mechanism.

Exposure of the head to pulse-modulated microwaves induces the perception of a sound. It has been hypothesized that the electromagnetic energy is converted to acoustic energy in the skull and then conducted through the bone. Dynamic time-averaged interferometric holography showed that the predicted motion of head tissue did not occur. An alternative locus for this hearing effect is suggested.

Animals↗