ABSTRACT
The paper represents theresults of longitudinal monitoring of the changes in the parameters of simple visual-motor reaction, the visual acuity and the rate of the visual discrimination in the child users of mobile communication, which indicate the multivariability of the possible effects of radiation from mobile phones on the auditory system of children.
Subject(s)
Cell Phone , Electromagnetic Fields/adverse effects , Vision, Ocular/radiation effects , Adolescent , Child , Child, Preschool , Female , Humans , Longitudinal Studies , Male , Photic StimulationABSTRACT
Eight experiments were conducted in synchronized monitoring of cardiac indices in six healthy women at rest simultaneously in three geographic locations--Sofia, Moscow and Arkhangelsk. Comparing spectra of the dynamic time series of the pulse and variations in the horizontal component of the geomagnetic field vector in the frequency range of Pc5 geomagnetic pulsations showed that the main oscillation periods represented in physiological and geophysical time series at each time moment largely coincide. This effect was observed roughly to an equal extent for volunteers who underwent the measurements in all three geographic locations.
Subject(s)
Biological Clocks/physiology , Heart Rate/physiology , Magnetic Fields , Adult , Bulgaria , Female , Humans , Middle Aged , MoscowABSTRACT
The study presents the findings of longitudinal observations of the changes in the parameters of simple auditory-motor response in children-users of mobile communication. The obtained results indicate the multivariability of possible effects of radiation from mobile phones on the auditory system of children.
Subject(s)
Audiometry/methods , Auditory Perceptual Disorders/etiology , Cell Phone/standards , Hearing/radiation effects , Psychomotor Performance/radiation effects , Radio Waves/adverse effects , Acoustic Stimulation , Age Factors , Auditory Perceptual Disorders/diagnosis , Auditory Perceptual Disorders/epidemiology , Case-Control Studies , Child , Child, Preschool , Dose-Response Relationship, Radiation , Humans , Longitudinal Studies , Psychomotor Performance/physiology , Reaction Time/physiology , Reaction Time/radiation effects , Task Performance and Analysis , Time FactorsABSTRACT
An overview of the epidemiological and experimental evidence for exposure of humans and animals to electromagnetic radiation produced by mobile phones is provided. The effects of mobile phone radiation on the child's body are considered in detail. It has been shown that the children's organism is more sensitive to this kind of exposure than the adult one.
Subject(s)
Brain , Cell Phone , Cognition , Psychomotor Performance , Radio Waves/adverse effects , Adolescent , Brain/physiology , Brain/radiation effects , Child , Child, Preschool , Cognition/physiology , Cognition/radiation effects , Functional Laterality , Humans , Psychomotor Performance/physiology , Psychomotor Performance/radiation effects , Psychophysiology , Reaction Time/physiology , Reaction Time/radiation effectsABSTRACT
This study submits the results of a four-year monitoring of a complex diagnostics of the psychophysiological indicators for 196 children aged 7 to 12 years old: 147 of them are child users of mobile communication (test group) and 49 are in the control group. We have identified the following major trends of the psychophysiological indicators for child users of mobile communication: an increased number of phonemic perception disorders, abatement of efficiency, reduced indicators for the arbitrary and semantic memory, an increased fatigue. A steady decline of the parameters from high values to bottom standards has been found.
Subject(s)
Brain , Cell Phone , Cognition , Psychomotor Performance , Radio Waves/adverse effects , Adolescent , Brain/physiology , Brain/radiation effects , Case-Control Studies , Cell Phone/statistics & numerical data , Child , Child, Preschool , Cognition/physiology , Cognition/radiation effects , Functional Laterality , Humans , Psychomotor Performance/physiology , Psychomotor Performance/radiation effects , Psychophysiology , Reaction Time/physiology , Reaction Time/radiation effects , Task Performance and Analysis , Time FactorsABSTRACT
Experiments on male outbred albino rats showed that benzodiazepine tranquilizers phenazepam and flunitrazepam in ultralow doses (10(-9)-10(-15) mol/kg) produced an anxiolytic effect in the conflict situation test. This effect was not accompanied by myorelaxing and sedative side effects typical of standard doses of tranquilizers.
Subject(s)
Anti-Anxiety Agents/pharmacology , Behavior, Animal/drug effects , Benzodiazepines/pharmacology , Flunitrazepam/pharmacology , Tranquilizing Agents/pharmacology , Animals , Dose-Response Relationship, Drug , Male , Medazepam/pharmacology , RatsABSTRACT
A retrospective analysis of weekly values of geomagnetic activity during embryonal development for healthy and mentally diseased people was performed. A statistically significant in the aa-index for mentally diseased people by 4.5-5.5 week of embryonic growth was revealed. This suggesting that the level of geomagnetic activity affects the laying and development of the central nervous system.
Subject(s)
Embryonic and Fetal Development , Magnetics , Earth, Planet , Gestational Age , Humans , Mental Disorders/etiologySubject(s)
Anti-Anxiety Agents/pharmacology , Benzodiazepines , Benzodiazepinones/pharmacology , Flunitrazepam/pharmacology , Animals , Anti-Anxiety Agents/administration & dosage , Anti-Anxiety Agents/adverse effects , Benzodiazepinones/administration & dosage , Benzodiazepinones/adverse effects , Dose-Response Relationship, Drug , Flunitrazepam/administration & dosage , Flunitrazepam/adverse effects , Male , RatsABSTRACT
A method of classification of outbred albino rats by means of forced swimming in a tank filled with water and equipped by freely turning wheels was developed. Using this technique a population of albino rats can be divided into three groups: highly active (HA), low active (LA) animals, and rats with intermediate activity. HA animals exhibit stable behaviour in forced swimming and conflict situation paradigms. They are also more sensitive to a benzodiazepine anxiolytic phenazepam in conflict situation test. At the same time, LA rats decrease their activity and are less sensitive to phenazepam. Both groups (LA and HA) are not homogeneous: each of them includes animals demonstrating quite another type of behaviour compared with a majority of rats.
