Method for predicting epilepsy with polymorphic paroxysms

FIELD: medicine, psychiatry.

SUBSTANCE: one should conduct EEG-testing to detect total value of the indices of spectral power or percentage spectral power of delta- and teta-rhythms due to spectrometric technique in frontal, parietal, central and temporal areas both before and during emotional-negative loading when visual emotionally negative stimuli are presented followed by their imaginary reproduction. In case of higher indices to visual stimuli being above 15% against the background one should diagnose epilepsy. The method enables to increase the number of diagnostic means, increase accuracy and objectivity in predicting epilepsy with polymorphic paroxysms at dissociation of clinical and EEG-values.

EFFECT: higher efficiency of diagnostics.

1 ex, 1 tbl

 

The invention relates to medicine, namely to psychiatry.

A known method for the diagnosis of epilepsy in the dissociation of clinical and electroencephalographic (EEG) indices by conducting EEG research on the background of hyperventilation followed by analysis of the frequency ranges of the EEG, including the Delta and theta rhythms (a Guide for physicians "Methods of research in neurology and neurosurgery edited by Gusev E.I. et al. Ed. Knowledge, 2000, p.12).

The disadvantage of this method is the low accuracy assessment samples due to the fact that the change in EEG parameters often enhances synchronization in the alpha range and does not always lead to the generation of pathological Delta and theta activity, characteristic of epilepsy.

The technical result of the proposed solution is an extension of the diagnostic Arsenal, improving the accuracy and objectivity of the diagnosis of epilepsy with polymorphic seizures in the dissociation clinical and EEG indicators, which is of particular importance when conducting occupational medical and forensic psychiatric examination, and for selection of therapeutic tactics.

This result is achieved by the fact that the EEG study is conducted to determine the total metric indexes spectral power (CM) or a percentage of the spectral power (%CM) Delta - and theta-rhythms JV is chromaticism method in the frontal, parietal, Central and temporal areas before and during the emotionally-negative load - visual presentation of emotionally negative stimuli and their subsequent mental play) and when it is increased more than 15% compared with the background diagnose epilepsy.

Follows from the known level of the fact that the increase in the total index index CM or %-SEE Delta - and theta-rhythms in frontal cortical areas (frontal, parietal-Central and temporal) under the influence of emotionally negative load more than 15% compared with the background can serve as an objective diagnostic criterion of epilepsy with polymorphic seizures, contributing to the manifestation of abnormal epileptiform EEG indices.

The method is as follows.

Patients suffering from epilepsy with polymorphic seizures and no corresponding epileptiform signs on EEG, conduct background EEG study using the standard method of measurement spectrometric method indexes, Delta - and theta waves in the frontal, parietal-Central and temporal areas of the brain. Determine the sum of the indexes CM or %-SEE Delta - and theta-rhythms. Then ill spend emotionally negative load with the presentation of visual stimuli that cause fear and anxiety for life, for example, from the expression of the patient in a state of epileptic seizure with subsequent mental reproduction of this condition. During this load is repeated EEG study. Compare the total CM or %-SEE during loading with the background and when it is increased more than 15% of diagnosed epilepsy.

Example. Patient B., born in 1978, is under the supervision of the clinic epilepsy Moscow research Institute of psychiatry in 1998, outpatient map No. 963/98. Diagnosis: Idiopathic epilepsy with generalized convulsive and non-convulsive seizures. The onset of disease in 15 years (1993) with generalized convulsive seizures. Subsequently joined absences, increased to 1-3 per week due to inadequate therapy. Thus complains of increased anxiety, sensitivity, lower mood, sleep disturbance. On EEG, carried out by the standard method of pathological discharge activity characteristic of epilepsy, is not revealed.

Patients received background recording by the standard technique and spectral analysis of the EEG. Background indicators CM %CM) are presented in table 1.

To load the sum of the Delta - and theta-rhythms CM: 210,8+78,6=289,4 µv2, %CM: 413,7+154,1=567,8%.

The patient presented visual stimulus with the image of the patient in a state of epileptic seizure, followed by the statement: mentally to play emotionally negative situation - approximation of an epileptic seizure. While the thought is spent presenting a re-recording EEG with spectrometric analysis. The results are shown in table 1.

After loading the total Delta - and theta-rhythms CM: 259,9+81,2=341.1 µv2%SEE: 506,6+160,6=667.2%.

Comparison of total indicators before and during the emotionally-negative load CM: 289,4=100%, 341,1=X%, X=117,86 µv2, %-CM: 567,8=100%, 667,2=X% X=117,51%, hence CM and 17.86 %-CM 17.51% above background index.

Thus, the increase in total index index CM % CM Delta - and theta-rhythms during emotionally-negative samples more than 15% compared with the background in this patient were consistent with the diagnosis of epilepsy, which corresponded to clinical manifestations.

In this way the study of 37 patients with epilepsy with polymorphic seizures and absence of EEG bit epileptiform activity. The coincidence of the results of clinical and EEG studies occurred in 32 patients 86.5% of cases (p<0,01). In the control group of healthy subjects (10 people) similar changes were found.

The proposed method has advantages over the known, which consists in expanding the Arsenal of methods of objective diagnostics, improving their accuracy in patients with epilepsy with polymorphic seizures in the dissociation clinical and EEG indicators, which is of particular importance when conducting occupational medical and forensic psychiatric examination, and in the boron therapeutic tactics.

Table 1

Indicators CM (in μv) and %CM (%) before (a) and during (B) conducting emotionally negative load
Delta rhythmTheta rhythm
CM%CMCM%CM
AndBAndBAndBAndB
F324,036,443,7to 59.67,87,114,2the 11.6
F427,235,048,256,98,68,215,2the 13.4
C317,220,134,042,08,8the 9.7of 17.520,4
C421,025,237,745,510,310,518,618,9
P315,919,432,942,67,58,4the 15.618,4
P4of 21.926,639,7to 49.98,78,915,716,7
T316,517,941,948,25,56,213,816,6
T428,328,548,951,68,08,613,9the 15.6
F720,523,2to 47.2to 58.15,65,612,813,9
F818,327,639,552,27,88,016,815,1
Total210,8259,9413,7506,678,681,2154,1160,6

A method for the diagnosis of epilepsy by conducting clinical and EEG studies with measurement of indices of Delta and theta waves in the frontal, parietal-Central and temporal areas of the brain, characterized in that to determine the sum of the indices of the spectral power or percentage (%) spectral power in Delta and theta rhythms spectrometries is they method before and during the emotionally-negative load and when it is increased more than 15% compared with the background diagnose epilepsy.



 

Same patents:

FIELD: medicine; medical engineering.

SUBSTANCE: method involves recording multichannel electroencephalogram, electrocardiogram record and carrying out functional test and computer analysis of electrophysiological signals synchronously with multichannel record of electroencephalogram and electrocardiogram in real time mode. Superslow brain activity is recorded, carotid and spinal artery pools rheoelectroencephalogram is recorded and photopletysmogram of fingers and/or toes is built and subelectrode resistance of electrodes for recording bioelectrical cerebral activity is measured. Physiological values of bioelectrical cerebral activity are calculated and visualized in integrated cardiac cycle time scale as absolute and relative values of alpha-activity, pathological slow wave activity in delta and theta wave bandwidth. Cerebral metabolism activity dynamics level values are calculated and visualized at constant potential level. Heart beat rate is determined from electrocardiogram, pulsating blood-filling of cerebral blood vessels are determined from rheological indices data. Peripheral blood vessel resistance level, peripheral blood vessel tonus are determined as peripheral photoplethysmogram pulsation amplitude, large blood vessel tonus is determined from pulse wave propagation time data beginning from Q-tooth signal of electrocardiogram to the beginning of systolic wave of peripheral photoplethysmogram. Postcapillary venular blood vessels tonus is determined from constant photoplethysmogram component. Functional brain state is determined from dynamic changes of physiological values before during and after the functional test. Device for evaluating functional brain state has in series connected multichannel analog-to-digital converter, microcomputer having galvanically isolated input/output ports and PC of standard configuration and electrode unit for reading bioelectric cerebral activity signals connected to multichannel bioelectric cerebral activity signals amplifier. Current and potential electrode unit for recording rheosignals, multichannel rheosignals amplifier, current rheosignals generator and synchronous rheosignals detector are available. The device additionally has two-frequency high precision current generator, master input of which is connected to microcomputer. The first output group is connected to working electrodes and the second one is connected to reference electrodes of electrode unit for reading bioelectrical cerebral activity signals. Lead switch is available with its first input group being connected to potential electrodes of current and potential electrodes unit for recording rheosignals. The second group of inputs is connected to outputs of current rheosignals oscillator. The first group of outputs is connected to current electrodes of current and potential electrodes unit for recording rheosignals. The second group of outputs is connected to inputs of synchronous detector of rheosignals. Demultiplexer input is connected to output of synchronous detector of rheosignals and its outputs are connected to multichannel rheosignals amplifier inputs. Outputs of multichannel bioelectrical cerebral activity signals amplifier, multichannel rheosignals amplifier and electrophysiological signal amplifier are connected to corresponding inputs of multichannel analog-to-digital converter. Microcomputer outputs are connected to control input of lead switch, control input of multichannel demultiplexer, control input of multichannel analog-to-digital converter and synchronization inputs of current rheosignals oscillator and synchronous detector of rheosignals. To measure subelectrode resistance, a signal from narrow bandwidth current generator of frequency f1 exceeding the upper frequency fup of signals under recording is supplied. A signal from narrow bandwidth current generator of frequency f2≠ f1>fup is supplied to reference electrode. Voltages are selected and measured at output of each amplifier with frequencies of f1, f2 - Uf1 and Uf2 using narrow bandwidth filtering. Subelectrode resistance of each working electrode is determined from formula Zj=Ujf1 :(Jf1xKj), where Zj is the subelectrode resistance of j-th electrode, Ujf1 is the voltage at output from j-th amplifier with frequency of f1, Kj is the amplification coefficient of the j-th amplifier. Subelectrode resistance of reference electrode is determined from formula ZA=Ujf2 :(Jf2xKj), where ZA is the subelectrode resistance of reference electrode, Ujf2 is the voltage at output from j-th amplifier with frequency of f2, Jf2 is the voltage of narrow bandwidth current oscillator with frequency of f2.

EFFECT: wide range of functional applications.

15 cl, 10 dwg

FIELD: medicine; medical engineering.

SUBSTANCE: method involves doing multi-channel recording of electroencephalogram and carrying out functional tests. Recording and storing rheoencephalograms is carried out additionally with multi-channel recording of electroencephalogram synchronously and in real time mode in carotid and vertebral arteries. Electroencephalograms and rheoencephalograms are visualized in single window with single time axis. Functional brain state is evaluated from synchronous changes of electroencephalograms, rheoencephalograms and electrocardiograms in response to functional test. The device has electrode unit 1 for recording bioelectric brain activity signals, electrode unit 2 for recording electric cardiac activity signals, current and potential electrode unit 3 for recording rheosignals, leads commutator 4, current rheosignal oscillator 5, synchronous rheosignal detector 6, multi-channel bioelectric brain activity signals amplifier 7, electrophysiological signal amplifier 8, demultiplexer 9, multi-channel rheosignal amplifier 10, multi-channel analog-to-digital converter 11, micro-computer 12 having galvanically isolated input/output port and personal computer 13 of standard configuration.

EFFECT: enhanced effectiveness of differential diagnosis-making.

11 cl, 6 dwg

FIELD: medicine, neurology.

SUBSTANCE: one should establish neurological status, bioelectric cerebral activity, availability of perinatal and ORL pathology in patients, establish their gradations and numerical values followed by calculation of prognostic coefficients F1 and F2 by the following formulas: F1=-31,42+1,49·a1-2,44·a2+0,2·а3+1,63·a4+0,62·а5+3,75·a6+1,8·а7-3,23·a8-0,8·а9-1,32·а10+3,26·а11+8,92·a12-2,0·a13+3,88·а14+1,79·a15+0,83·a16-2,78·a17; F2=-27,58+1,43·a1+3,31·а2+0,08·а3+3,05·а4-0,27·а5+2,69·а6+3,11·а7-6,47·a8-6,55·a9+1,99·а10+5,25·а11+7,07·a12-0,47·a13+0,13·a14+4,04·a15-1,0·a16-1,14·а17, correspondingly, where a1 - patient's age, a2 - studying either at the hospital or polyclinic, a3 - duration of stationary treatment (in days), a4 - unconscious period, a5 - terms of hospitalization since the moment of light close craniocerebral trauma, a6 - smoking, a7 - alcohol misuse, a8 - arterial hypertension, a9 - amnesia, a10 - close craniocerebral trauma in anamnesis, a11 - psychoemotional tension, a12 - meteolability, a13 - cervical osteochondrosis, a14 - ORL pathology, a15 - availability of perinatal trauma in anamnesis with pronounced hypertension-hydrocephalic syndrome, a16 - availability of paroxysmal activity, a17 - availability and manifestation value of dysfunction of diencephalic structures. At F1 ≥ F2 on should predict the development of remote aftereffects in young people due to evaluating premorbid background of a patients at the moment of trauma.

EFFECT: higher reliability of prediction.

2 ex, 1 tbl

FIELD: medicine, neurology, psychopathology, neurosurgery, neurophysiology, experimental neurobiology.

SUBSTANCE: one should simultaneously register electroencephalogram (EEG) to detect the level of constant potential (LCP). At LCP negativization and increased EEG power one should detect depolarizational activation of neurons and enhanced metabolism. At LCP negativization and decreased EEG power - depolarized inhibition of neurons and metabolism suppression. At LCP positivation and increased EEG power - either repolarized or hyperpolarized activation of neurons and enhanced metabolism. At LCP positivation and decreased EEG power - hyperpolarized suppression of neurons and decreased metabolism of nervous tissue. The method enables to correctly detect therapeutic tactics due to simultaneous LCP and EEG registration that enables to differentiate transition from one functional and metabolic state into another.

EFFECT: higher accuracy of diagnostics.

5 dwg, 1 ex, 1 tbl

The invention relates to medicine, in particular to neurosurgery, and can be used for the diagnosis of brain edema is at its focal lesions

The invention relates to medicine, namely to neurology and psychiatry

The invention relates to medicine, namely to functional diagnostics and neurophysiology

The invention relates to medicine, neurology

FIELD: medicine, neurology, psychopathology, neurosurgery, neurophysiology, experimental neurobiology.

SUBSTANCE: one should simultaneously register electroencephalogram (EEG) to detect the level of constant potential (LCP). At LCP negativization and increased EEG power one should detect depolarizational activation of neurons and enhanced metabolism. At LCP negativization and decreased EEG power - depolarized inhibition of neurons and metabolism suppression. At LCP positivation and increased EEG power - either repolarized or hyperpolarized activation of neurons and enhanced metabolism. At LCP positivation and decreased EEG power - hyperpolarized suppression of neurons and decreased metabolism of nervous tissue. The method enables to correctly detect therapeutic tactics due to simultaneous LCP and EEG registration that enables to differentiate transition from one functional and metabolic state into another.

EFFECT: higher accuracy of diagnostics.

5 dwg, 1 ex, 1 tbl

FIELD: medicine, neurology.

SUBSTANCE: one should establish neurological status, bioelectric cerebral activity, availability of perinatal and ORL pathology in patients, establish their gradations and numerical values followed by calculation of prognostic coefficients F1 and F2 by the following formulas: F1=-31,42+1,49·a1-2,44·a2+0,2·а3+1,63·a4+0,62·а5+3,75·a6+1,8·а7-3,23·a8-0,8·а9-1,32·а10+3,26·а11+8,92·a12-2,0·a13+3,88·а14+1,79·a15+0,83·a16-2,78·a17; F2=-27,58+1,43·a1+3,31·а2+0,08·а3+3,05·а4-0,27·а5+2,69·а6+3,11·а7-6,47·a8-6,55·a9+1,99·а10+5,25·а11+7,07·a12-0,47·a13+0,13·a14+4,04·a15-1,0·a16-1,14·а17, correspondingly, where a1 - patient's age, a2 - studying either at the hospital or polyclinic, a3 - duration of stationary treatment (in days), a4 - unconscious period, a5 - terms of hospitalization since the moment of light close craniocerebral trauma, a6 - smoking, a7 - alcohol misuse, a8 - arterial hypertension, a9 - amnesia, a10 - close craniocerebral trauma in anamnesis, a11 - psychoemotional tension, a12 - meteolability, a13 - cervical osteochondrosis, a14 - ORL pathology, a15 - availability of perinatal trauma in anamnesis with pronounced hypertension-hydrocephalic syndrome, a16 - availability of paroxysmal activity, a17 - availability and manifestation value of dysfunction of diencephalic structures. At F1 ≥ F2 on should predict the development of remote aftereffects in young people due to evaluating premorbid background of a patients at the moment of trauma.

EFFECT: higher reliability of prediction.

2 ex, 1 tbl

FIELD: medicine; medical engineering.

SUBSTANCE: method involves doing multi-channel recording of electroencephalogram and carrying out functional tests. Recording and storing rheoencephalograms is carried out additionally with multi-channel recording of electroencephalogram synchronously and in real time mode in carotid and vertebral arteries. Electroencephalograms and rheoencephalograms are visualized in single window with single time axis. Functional brain state is evaluated from synchronous changes of electroencephalograms, rheoencephalograms and electrocardiograms in response to functional test. The device has electrode unit 1 for recording bioelectric brain activity signals, electrode unit 2 for recording electric cardiac activity signals, current and potential electrode unit 3 for recording rheosignals, leads commutator 4, current rheosignal oscillator 5, synchronous rheosignal detector 6, multi-channel bioelectric brain activity signals amplifier 7, electrophysiological signal amplifier 8, demultiplexer 9, multi-channel rheosignal amplifier 10, multi-channel analog-to-digital converter 11, micro-computer 12 having galvanically isolated input/output port and personal computer 13 of standard configuration.

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11 cl, 6 dwg

FIELD: medicine; medical engineering.

SUBSTANCE: method involves recording multichannel electroencephalogram, electrocardiogram record and carrying out functional test and computer analysis of electrophysiological signals synchronously with multichannel record of electroencephalogram and electrocardiogram in real time mode. Superslow brain activity is recorded, carotid and spinal artery pools rheoelectroencephalogram is recorded and photopletysmogram of fingers and/or toes is built and subelectrode resistance of electrodes for recording bioelectrical cerebral activity is measured. Physiological values of bioelectrical cerebral activity are calculated and visualized in integrated cardiac cycle time scale as absolute and relative values of alpha-activity, pathological slow wave activity in delta and theta wave bandwidth. Cerebral metabolism activity dynamics level values are calculated and visualized at constant potential level. Heart beat rate is determined from electrocardiogram, pulsating blood-filling of cerebral blood vessels are determined from rheological indices data. Peripheral blood vessel resistance level, peripheral blood vessel tonus are determined as peripheral photoplethysmogram pulsation amplitude, large blood vessel tonus is determined from pulse wave propagation time data beginning from Q-tooth signal of electrocardiogram to the beginning of systolic wave of peripheral photoplethysmogram. Postcapillary venular blood vessels tonus is determined from constant photoplethysmogram component. Functional brain state is determined from dynamic changes of physiological values before during and after the functional test. Device for evaluating functional brain state has in series connected multichannel analog-to-digital converter, microcomputer having galvanically isolated input/output ports and PC of standard configuration and electrode unit for reading bioelectric cerebral activity signals connected to multichannel bioelectric cerebral activity signals amplifier. Current and potential electrode unit for recording rheosignals, multichannel rheosignals amplifier, current rheosignals generator and synchronous rheosignals detector are available. The device additionally has two-frequency high precision current generator, master input of which is connected to microcomputer. The first output group is connected to working electrodes and the second one is connected to reference electrodes of electrode unit for reading bioelectrical cerebral activity signals. Lead switch is available with its first input group being connected to potential electrodes of current and potential electrodes unit for recording rheosignals. The second group of inputs is connected to outputs of current rheosignals oscillator. The first group of outputs is connected to current electrodes of current and potential electrodes unit for recording rheosignals. The second group of outputs is connected to inputs of synchronous detector of rheosignals. Demultiplexer input is connected to output of synchronous detector of rheosignals and its outputs are connected to multichannel rheosignals amplifier inputs. Outputs of multichannel bioelectrical cerebral activity signals amplifier, multichannel rheosignals amplifier and electrophysiological signal amplifier are connected to corresponding inputs of multichannel analog-to-digital converter. Microcomputer outputs are connected to control input of lead switch, control input of multichannel demultiplexer, control input of multichannel analog-to-digital converter and synchronization inputs of current rheosignals oscillator and synchronous detector of rheosignals. To measure subelectrode resistance, a signal from narrow bandwidth current generator of frequency f1 exceeding the upper frequency fup of signals under recording is supplied. A signal from narrow bandwidth current generator of frequency f2≠ f1>fup is supplied to reference electrode. Voltages are selected and measured at output of each amplifier with frequencies of f1, f2 - Uf1 and Uf2 using narrow bandwidth filtering. Subelectrode resistance of each working electrode is determined from formula Zj=Ujf1 :(Jf1xKj), where Zj is the subelectrode resistance of j-th electrode, Ujf1 is the voltage at output from j-th amplifier with frequency of f1, Kj is the amplification coefficient of the j-th amplifier. Subelectrode resistance of reference electrode is determined from formula ZA=Ujf2 :(Jf2xKj), where ZA is the subelectrode resistance of reference electrode, Ujf2 is the voltage at output from j-th amplifier with frequency of f2, Jf2 is the voltage of narrow bandwidth current oscillator with frequency of f2.

EFFECT: wide range of functional applications.

15 cl, 10 dwg

FIELD: medicine, psychiatry.

SUBSTANCE: one should conduct EEG-testing to detect total value of the indices of spectral power or percentage spectral power of delta- and teta-rhythms due to spectrometric technique in frontal, parietal, central and temporal areas both before and during emotional-negative loading when visual emotionally negative stimuli are presented followed by their imaginary reproduction. In case of higher indices to visual stimuli being above 15% against the background one should diagnose epilepsy. The method enables to increase the number of diagnostic means, increase accuracy and objectivity in predicting epilepsy with polymorphic paroxysms at dissociation of clinical and EEG-values.

EFFECT: higher efficiency of diagnostics.

1 ex, 1 tbl

FIELD: medicine, neurophysiology.

SUBSTANCE: one should carry out EEG survey to detect spectrometrically the index of full range if alpha-rhythm both before and after therapy. Moreover, power index of full range of alpha-rhythm and the index of 9-10 Hz-strip's spectral power should be detected in occipital cerebral areas. One should calculate the value of the ratio of the index of 9-10 Hz-strip's spectral power to the index of full range of alpha-rhythm and at the increase of this value by 20% against the background it is possible to evaluate positive result of therapy. The method increases the number of diagnostic means applied in evaluating therapeutic efficiency in the field of neurophysiology.

EFFECT: higher efficiency of evaluation.

1 ex

FIELD: medicine, neurology.

SUBSTANCE: method involves carrying out the standard vascular and nootropic therapy. Diazepam is administrated under EEG control with the infusion rate that is calculated by the following formula: y = 0.0015x - 0.025 wherein y is the rate of diazepam administration, mg/h; x is an average EEG amplitude, mcV. Method provides enhancing the effectiveness of treatment of patients. Invention can be used for treatment of patients in critical severe period of ischemic insult.

EFFECT: enhanced effectiveness of treatment.

2 tbl, 1 dwg, 1 ex

FIELD: medicine.

SUBSTANCE: method involves selecting signals showing patient consciousness level and following evoked auditory potentials as responses to repeating acoustic stimuli, applying autoregression model with exogenous input signal and calculating AAI index showing anesthesia depth next to it.

EFFECT: quick tracing of unconscious to conscious state and vice versa; high accuracy of measurements.

9 cl, 3 dwg

FIELD: medicine; experimental and medicinal physiology.

SUBSTANCE: device can be used for controlling changes in functional condition of central nervous system. Device has receiving electrodes, unit for reading electroencephalograms out, analog-to-digital converter and inductor. Low noise amplifier, narrow band filter linear array which can be program-tuned, sample and store unit, online memory, microcontroller provided with controlled permanent storage, liquid-crystal indicator provided with external control unit are introduced into device additionally. Receiving electrodes are fastened to top part of patient's head. Outputs of electrodes are connected with narrow band filters linear array through electroencephalograph. Output of linear array is connected with input of input unit which has output connected with input of analog-to-digital converter. First bus of analog-to-digital converter is connected with online storage. Recording/reading bus of microcontroller is connected with control input of input unit and its starting bus is connected with address input of online storage. Third control bus is connected with narrow band filters linear array. Second control bus is connected with liquid-crystal indicator. Output bus is connected with inductor. External control (keyboard) of first control bus is connected with microcontroller. Output of online storage is connected with data input of microcontroller through 12-digit second data bus. Efficiency of influence is improved due to getting specific directed influence being based onto general technological transparency of processing of human brain's signals and strictly specific influence based on the condition of better stimulation.

EFFECT: increased efficiency.

3 cl, 1 dwg, 1 tbl

FIELD: medicine, neurology, professional pathology.

SUBSTANCE: one should carry out either biochemical blood testing and electroencephalography or SMIL test, or ultrasound dopplerography of the main cranial arteries, rheoencephalography (REG) to detect the volume of cerebral circulation and hypercapnic loading and their digital values. Then it is necessary to calculate diagnostic coefficients F by the following formulas: Fb/e=6.3-0.16·a1+0.12·a2-1·a3+0.2·a4, or FSMIL=9.6+0.16·a5-0.11·a6-0.14·a7+0.07·a8, or Fhem=48.6-0.04·a9+0.15·a10+13.7·a11-0.02·a12+24.7·a13, where Fb/e -diagnostic coefficient for biochemical blood testings and EEG; FSMIL - diagnostic coefficient for SMIL test; Fhem - diagnostic coefficient for hemodynamic testing; 6.3; 9.6 and 48.6 - constants; a1 - the level of vitamin C in blood; a2 - δ-index by EEG; a3 - atherogenicity index; a4 - the level of α-proteides in blood; a5 - scale 3 value by SMIL; a6 - scale K value by SMIL; a7 - scale 5 value by SMIL; a8 - scale 7 value by SMIL; a9 - the level of volumetric cerebral circulation; a10 - the value of linear circulatory rate along total carotid artery, a11 - the value of resistive index along total carotid artery; a12 - the value for the tonicity of cerebral vessels at carrying out hypercapnic sampling by REG; a13 - the value for the intensity of cerebral circulation in frontal-mastoid deviation by REG. At F value being above the constant one should diagnose toxic encephalopathy, at F value being below the constant - discirculatory encephalopathy due to applying informative values.

EFFECT: higher accuracy of diagnostics.

6 ex, 1 tbl

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