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The aim of this study was to evaluate the effect of modulated microwave exposure on human EEG of individual subjects. The experiments were carried out on four different groups of healthy volunteers. The 450 MHz microwave radiation modulated at 7 Hz (first group, 19 subjects), 14 and 21 Hz (second group, 13 subjects), 40 and 70 Hz (third group, 15 subjects),(More)
This study addresses application of Higuchi’s fractal dimension (FD) as a measure to evaluate the effect of external periodic stressor on electrical oscillations in the brain. Modulated microwave radiation was applied as a weak periodic stressor with strongly inhomogeneous distribution inside the brain. Experiments were performed on a group of 14(More)
BACKGROUND Information transmission and processing in the nervous system has stochastic nature. Multiple factors contribute to neuronal trial-to-trial variability. Noise and variations are introduced by the processes at the molecular and cellular level (thermal noise, channel current noise, membrane potential variations, biochemical and diffusion noise at(More)
This study is aimed at evaluating the effect of microwave radiation on human brain bioelectric activity at different levels of exposure. For this purpose, 450 MHz microwave exposure modulated at 40 Hz frequency was applied to a group of 15 healthy volunteers at two different specific absorption rate (SAR) levels: a higher level of 0.303 W/kg (field strength(More)
AIM To elucidate relation between prolongation of corrected maximal QT intervals and QT dispersion (QTcmax, QTcD) and presence and severity of arterial hypertension, as well as other factors determining high cardiovascular risk in female population of Tallinn aged 56 - 66 years. MATERIAL AND METHODS A sample of female citizens of Tallinn (n=123, age 56 -(More)
In a framework of a population study in Tallinn triple blood pressure measurements, electro- and echocardiography were carried out in 398 women (82.6% of all participants) aged 35-59. Left ventricular hypertrophy (left ventricular mass >or=198 g, left ventricular mass/height ratio >or=121 g/m, left ventricular mass/body surface area ratio >or=120 g/m2) was(More)
AIM To assess relationship between QT dispersion, hypertension, and different variants of left ventricular geometry (concentric or eccentric hypertrophy, concentric remodeling). MATERIAL AND METHODS Blood pressure measurement, electro- and echocardiography were used in the study of a random sample of Tallinn population (321 men and 396 women) aged 35-59(More)
Aim of the study was to assess dynamics of prevalence of arterial hypertension (AH) and main cardiovascular risk factors (RF) in a women population of Tallin during 10 years of follow up. In 2008-2009 we repeated measurements of arterial pressure (AP), electrocardiographic, echocardiographic, and complex laboratory examinations in 314 participants of(More)
The aim of this study was to propose an improved method for accurate dialysis dose evaluation and extrapolation by means of Kt/ V from online UV-absorbance measurements for real time and continuous treatment monitoring. The study included a total of 24 treatments from ten uremic patients, seven of whom were male and three females. All patients were on(More)
Echocardiography was performed in 325 men and 398 women in the framework of a population survey of inhabitants of Tallinn aged 35 to 59 years in 1999-2001. Left ventricular geometry was analyzed according to generally recognized four types. Prevalence of concentric hypertrophy was similar in men and women (7.7% and 9.1%, respectively). In all age groups(More)