Biomedical subjects
Publications and source records attributed to E A Zhirmunskaia.
"Electric convulsive cerebral activity" term does not correspond to the literary data about frequency of so called "epiphenomena" on EEG of the patients. This term exceeds the limits of the clinical electroencephalographical law about nosological non-specificity of biopotentials of brain. It is suggested to change this term for "paroxismal activity on EEG".
Based on an analysis of the EEG of 372 patients the authors provide characterization of the asthenic, anxious-depressive, truncal-cerebellar, parkinsonian, psycho-organic and cerebral (diffuse) syndromes of dyscirculatory encephalopathy. Demonstrate the dynamics of diverse ECG readings as each of the clinical syndromes progresses. Suggest the information content of some structural components of the EEG.
The brain bioelectric activity was studied in 280 acute stroke patients. Factor and cluster analyses were applied to 4 EEG groups: recordings of left and right hemispheres with and without a damaged foci. The hemispheral lesion contralateral to the damaged focus was shown to differ in reactive EEG shifts what the hemisphere is, namely left or right. This opens new theorical vistas on the studied of paired performance of human cerebral hemispheres.
Clinical manifestations of dyscirculatory encephalopathy (DE) were studied in 548 patients. The occurrence of the major signs and syndromes as well as their course at different stages of the disease were revealed. Clinical criteria of classifying the patients into one of the stages were clarified. In 372 recordings of baseline and response EEG of patients at diverse stages of DE the course of various EEG indices and precise EEG characterization of each stage were given as the disease progressed. Good correlation between the course of the disease and EEG shifts allows the brain bioelectrical activity to be a tool in DE staging.
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Clinico-encephalographic examinations of patients suffering from neuroses and neurosis-like states with marked vegetative disturbances were carried out. Regular connections between the integral electrographic phenomena and individual features of the EEG on the one hand, and the character and the depth of the vegetovascular, metabolic, endocrinal, emotional and neurotic disturbances on the other were revealed. The averaged models of EEGs constructed with the aid of an electronic computer can be used for ordinary practical evaluation of EEGs with the purpose of specifying the localization of the affection in individual links of the limboreticular system.
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The authors analyse changes seen in the EEG and secondary dysfunction of the brain stem structures in patients with acute disorders of circulation in the brain hemispheres. On the basis of implicative analysis of the clinico-morphological and EEG data the authors come to the conclusion on the existence of significant EEG criteria in secondary dysfunctions of brain stem structures on the different stages of its development. The significance of EEG in differential diagnosis of primary and secondary brain stem lesions is stressed.
An analysis of the indices of bioelectrical brain activity and clinical symptoms was accomplished by a computer according to the principle "man-machine". The authors examined 2 groups of patients with some hereditary forms of diseases of the nervous system (62 cases) and with disorders of cerebral circulation (106 cases). It was demonstrated that there is a possibility of clarifying the typical localization of lesion and of differentiating the different clinico EEG syndromes.
The paper deals with a correlational analysis of brain biopotentials in the process of speech activity in 9 normals and 10 patients with residual symptoms of brain strokes. The authors dt and erroneous fulfillment of different types of tests (free and determined associations). It was established that in a difficult fulfillment of a speech instruction there is a compensatory involvement into the activity of the right normal hemisphere.
The authors describe machine algorhythm for the drawing of two-dimensional histograms of the EEG in the amplitude-wave frequency coordinates constituting a curve. EEG in its coding is presented by the extremums with the fixation of the moments of their appearance. Usefulness of the algorhythm work is confirmed by examples.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
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