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Biomedical subjects

R P Belonog

Publications and source records attributed to R P Belonog.

At least 19 recordsLinked to original sources
PubMed1992

[Correlations of cognition disorders and the EEG data in elderly patients with circulatory encephalopathy].

The possibilities of the use of electroencephalography for evaluating intellectual-mnemonic disorders in elderly patients with cerebral atherosclerosis have been studied. The study included 95 subjects aged 60 to 74 years with varying intensity of circulatory atherosclerotic encephalopathy (without brain stroke). The psychological tests were performed according to Wechsler's methods. To evaluate the EEG, visual and automatic spectral analyses were employed. The data obtained were analyzed by means of discriminant, correlation and regression methods. A certain relationship was found between the results of the psychological tests and the EEG readings. The method of automatic EEG analysis is proposed, which allows revealing intellectual disorders in patients suffering from cerebral atherosclerosis. Its comparability with the data obtained by means of visual EEG analysis is discussed.

Age Factors↗
PubMed1984

[Visual evoked potentials among parkinsonism patients in the older age groups].

Using an ATAC 501-20 system and an RM-85 polygraph manufactured by Nihon-Cogden, visual evoked potentials (VEP) were examined in 60 middle-aged and senile patients with parkinsonism and also in 40 clinically healthy age-matched test subjects. Three major types of the response configuration were identified. The authors established a lengthening of the latent periods of the majority of the VEP components in the patients with parkinsonism which was combined with a reduction in the age differences characteristic of these parameters in clinically normal subjects. Parkinsonism was also associated with opposite changes in the amplitudes of the early (an increase) and the late (a decrease) components of VEP.

Age Factors↗
PubMed1981

[Bioelectrical activity of the brain during long-term observation of patients with early cerebral atherosclerosis].

Results of the first four-year stage of long-time (planned for 15 years) examinations of the brain bioelectrical activity in 97 patients (aged 40 to 59 years) with initial signs of cerebral atherosclerosis are presented. A relative stability of the oscillatory process regularities was ascertained at annual examinations and courses of etiopathogenetic therapy. The frequency parameters of the alpha-activity were found to undergo certain age charges that took place in the presence of the relative increase of the share of low-frequency and dominantless curves.

Adult↗
PubMedDate not supplied

[The effect of propranolol on the functional condition of the central and autonomic nervous system in persons of various ages].

The effect of propranolol (0.6 mg/kg b.w.) on the functional state of the central and vegetative nervous system was studied in 60 apparently healthy of different age by means of electroencephalography and spectral analysis of the cardiac rhythm. In the young subjects propranolol produced inhibitory effects on the central nervous system, while in the elderly and very elderly subjects it was predominantly an activating one. The elderly versus young subjects showed a more marked impairment of the sympathetic effects on the cardiac rhythm due to propranolol administration. It was a characteristic feature of propranolol action to display a disaccord between its effects on the central nervous system and vegetative control of the cardiac rhythm in the very elderly people.

Adult↗