PubMed Health⌕ Search

Biomedical subjects

A I Mikhaĭlov

Publications and source records attributed to A I Mikhaĭlov.

At least 19 recordsLinked to original sources
PubMed2005

[Parameters of physical and mental development of children and adolescents residing near enterprise for radioactive waste processing and stationary storage].

Operation of enterprise for radioactive waste processing and disposal does not influence negatively physical and mental development of children and adolescents residing in the area under observation. In some parameters, physical and mental development of children and adolescents residing in the area under observation surpasses that in reference area--that could be due to social and economic peculiarities.

Adolescent↗
PubMedDate not supplied

[Electrical activity of the limbic structures of the dog brain during simultaneous stimulation of the cingulate gyrus and hypothalamus].

Simultaneous electrical stimulation of the anterior part of the cingulate gyrus and the anterior-lateral part of the hypothalamus in the dog brought about EEG synchronization in the limbic system structures and increased correlation coefficients between them. The animal's behaviour exhibited positive emotionally reactions (licking, sniffing, wagging the tail), attended with slowing of the heart rate. The indicated changes directly depend on the degree of emotional stress (the changes are more pronounced in hungry than in sated animals). Simultaneous stimulation of the anterior part of the cingulate gyrus and the anterior-lateral part of the hypothalamus apparently activates a system which reduces the level of emotional stress.

Animals↗
PubMedDate not supplied

[Electroencephalographic correlates of a pathologic inert motor reaction in dogs].

Changes in EEG were examined during setting in of a pathological inert motor reaction in dogs with parts of the tongue brought out and electrodes implanted in the motor cortical area and limbic structures. The reaction was formed when combining stimulation by a salt solution of the part of the tongue with electrical stimulation of the paw. The inert motor reaction is characterized by enhanced synchronization (theta-rhythm) in the hippocampus and increased amplitude of the beta-rhythm in the motor cortical areas. A frequency-amplitude analysis of the summary EEG has shown that the highest correlation was established at the beginning of elaboration of the inert motor reaction only between a small number of limbic structures (the hippocampus, the hypothalamus and the cingulate gyrus), then between all the examined structures of the brain; when the inert reaction became elaborated the number of structures with a high correlation coefficient diminished again and was reduced to the hippocampus, the hypothalamus and the cortical motor area.

Animals↗