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1.
I. N. Konareva 《Neurophysiology》2011,43(1):42-52
In a group of 118 adults of both sexes, we studied modulation of high-frequency EEG rhythms (β and γ components) under conditions
of EEG activation related to opening of the eyes. Typical changes in the α rhythm (significant depression in the overwhelming
majority of the tested subjects) was accompanied by different (in direction and intensity) shifts of the spectral powers (SPs)
of the β and γ components in different subjects. The power of the β1 subcomponent under conditions of the activation reaction
increased in 6 persons and dropped in 109 persons; changes in this index in two hemispheres were opposite in their directions
in 3 subjects. Thus, changes in the β1 SP upon opening of the eyes were nearly parallel to those of the α rhythm but less
intense. The subgroups differentiated according to the pattern of reactivity of the β2 subcomponent included 23, 85, and 10
subjects; for the γ rhythm, the corresponding numbers were 31, 72, and 8. In other words, the patterns of reactivity of β2
and γ oscillations were rather similar to each other but differed significantly from the pattern for the β1 rhythm. Values
of the differential coefficients of reactivity (DCRs) of the β1, β2, and γ rhythms demonstrated significant correlations that
were especially close for the β2 and γ activity. Within the entire examined group, we found significant negative correlations
of the DCR values for β and γ activities with the estimates of some psychological characteristics of the subjects (levels
of neuroticism, psychoticism, plasticity, self-control of behavior, and some others) measured using the RTS (Strelau), EPQ
(Eysenck), OST (Rusalov), and 16PF (Kettel) questionnaires. The dispersion analysis demonstrated that the above-mentioned
subgroups of the subjects (with increase and decrease in the SPs of the β and γ rhythms in both hemispheres and opposite changes
of these indices in the right and left hemisphere) showed significant or close to significant specific intergroup differences
of a few mean values of the psychological characteristics estimated according to the above questionnaires. Possible mechanisms
of modulation of high-frequency EEG components under conditions of the reaction of EEG activation and relations of such changes
to the psychological characteristics of the personality are discussed. 相似文献
2.
I. N. Konareva 《Neurophysiology》2006,38(5-6):380-388
In a group of 80 adults of both sexes, we studied the correlation between the characteristics of aggressiveness of the individual
(diagnosed using the Buss-Durkee questionnaire) and parameters of the frequency components (rhythms) of EEG recorded in the
resting state from leads C3 and C4 according to the 10–20 system. Despite the natural high interindividual variability, the
higher spectral powers of nearly all EEG frequency components (δ-, θ-, α-, and β rhythms) and coefficient of reactivity of
the α rhythm corresponded in general to lower indices on the scales of the Buss-Durkee questionnaire and smaller values of
the index of aggressiveness and index of hostility. These correlations probably reflect a significant dependence of both characteristics
of aggressiveness of personality and amplitude parameters of the EEG rhythms on hereditary factors. Both these aspects of
the neurodynamic constitution of the individual are to a significant extent determined by the specificity of organization
and functioning of a few neurotransmitter (in particular, aminergic) and neurohumoral systems.
Neirofiziologiya/Neurophysiology, Vol. 38, Nos. 5/6, pp. 448–457, September–December, 2006. 相似文献
3.
I. N. Konareva 《Neurophysiology》2009,41(1):54-62
In a group of 70 adult subjects of both sexes, we estimated the levels of the need for achievement and its motivation (interpreted
as generalized characteristics of the state of the motivational sphere of a personality and diagnosed using questionnaires
of Orlov and Mehrabian) and examined the correlations of these estimates with spectral powers (SPs) of the frequency components
(rhythms) of the current background EEG (С3 and С4 leads according to the 10–20 system). Despite the fact that naturally high
interindividual variability exists, high estimates of the need for achievement correlated with medium values of the SPs of
most EEG frequency components (δ, θ, α, and β1 rhythms), low SPs of the β2 and γ rhythms, and higher values of the coefficient of reactivity (CR) of the α rhythm. A high level of the need for achievement
corresponded to higher SPs of the θ and γ rhythms and high CR of the α rhythm, a medium SP of this EEG component, and lower
SPs of the δ and β rhythms. The coefficient of interhemisphere asymmetry of the α rhythm was the highest at low values of
the studied psychological indices. Interrelations that we found in our study can be explained as follows: both the characteristics
of the need for achievement and motivation typical of a certain personality and the amplitude parameters of the EEG rhythms
observed in this individual depend significantly on genetically determined factors (in particular, on neurochemical ones).
These peculiarities of neurodynamic constitution of the individual are, to a considerable extent, due to the specificity of
organization and functioning of a few neurotransmitter (aminergic, in particular) and neurohumoral systems.
Neirofiziologiya/Neurophysiology, Vol. 41, No. 1, pp. 61–69, January–February, 2009. 相似文献
4.
I. N. Konareva 《Neurophysiology》2011,42(4):286-293
In a group including 72 adults of both sexes, we studied correlations between the estimates of the so-called coronary-prone
personality type (type A) diagnosed using the Jenkins questionnaire and the spectral powers (SPs) of the frequency components
(rhythms) of background EEGs recorded in the resting state (leads C3 and C4 according to the 10-20 system). Despite natural
high interindividual variability, estimates that characterized the subject as belonging to the behavioral type A corresponded,
on average, to relatively low SPs of the δ, θ, and α EEG components, intermediate values of the β1 rhythm SP and coefficient of reactivity of the α rhythm, and higher SPs of the high-frequency (β2 and γ) rhythms. Estimates characterizing type B personality corresponded to significantly higher δ-rhythm SPs, intermediate
SPs of the θ and α rhythms, and smaller SPs of the β and γ rhythms. The interhemisphere asymmetry coefficient for the α rhythm
was usually negative in type-A individuals and positive in the cases of types B and AB. The peculiarities observed are probably
determined, to a certain extent, by the fact that both the characteristics of the behavioral types of the personality and
the amplitude parameters of EEG rhythms depend significantly on inherited (in particular neurochemical) factors. Such peculiarities
of the neurodynamic constitution of the individual are determined, to a considerable extent, by the specificity of organization
and functioning of a few neurotransmitter (in particular aminergic) and neurohumoral systems. 相似文献
5.
I. N. Konareva 《Neurophysiology》2011,43(2):131-141
In a group of 68 adults of both sexes, we examined correlations between estimates of the psychological adaptability of an
individual (diagnosed using a multilevel personality questionnaire, MPQ) and spectral powers, SPs, of the frequency components
(rhythms) of background EEG recorded in the resting state (leads C3 and C4 according to the 10–20 system). Despite high individual
variability within the group, indices by the scale “communicative potential” demonstrated significant correlation with the
SP of the θ rhythm, while estimates of the moral normativity correlated with the SPs of the α and β1 rhythms. Subgroups of
the persons classified according to the level of the integral adaptation capability (personality’s adaptation potential) differed
from each other in the mean estimates of interhemisphere asymmetry of the α rhythm; this index was higher in subjects with
the medium/high level of adaptability. The correlations observed are, most probably, determined by the fact that both the
level of psychological adaptability of the personality and the EEG amplitude parameters depend significantly on genetic (neurochemical,
in particular) factors. Such peculiarities of the neurodynamic constitution of the individual are probably determined, to
a considerable extent, by the specificities of organization and functioning of a few neurotransmitter (aminergic, in particular)
and neurohumoral systems. 相似文献
6.
We studied changes in the amplitudes of event-related EEG potentials (ERPs) and power spectra of background EEG in the course
of a series of EEG-feedback sessions directed toward an increase in the ratio of powers of the α vs θ rhythms. The examined group included 70 volunteers divided into an experimental group (n = 37) and a control group (n = 33). The intensity of acoustic white noise overlapping the musical background served as a feedback signal; it became lower
with increase in the above ratio, while in the control group it remained constant. The EEG potentials were recorded from C3
and C4 leads. The ERPs were recorded within a paradigm of measuring time intervals. Within a series of EEG-feedback sessions,
the α/θ ratio decreased somewhat both in the control and experimental groups, but in subjects of the latter group this decrease
was less significant, and the mean intragroup index became significantly greater than the respective value in the control
group after the end of the third session. The EEG-feedback sessions also resulted in significant increases in the amplitudes
of early components of the readiness potential in both hemispheres and in the amplitude of the contingent negative variation
in the right hemisphere. We conclude that, in most healthy subjects, at least three sessions of α/θ training are necessary
to form an effective series providing considerable changes in the pattern of EEG potentials.
Neirofiziologiya/Neurophysiology, Vol. 39, No. 1, pp. 88–98, January–February, 2007. 相似文献
7.
In chronic experiments on awake cats, we studied the dynamics of the spectral power density (SPD) of the α rhythm vs SPD of the θ rhythm ratio and also of the characteristics of impulse activity generated by supposedly noradrenergic (NA)
neurons of the locus coeruleus in the course of feedback (FB) sessions by EEG characteristics (EEG-FB). Trainings were performed using a technique analogous
to that in EEG-FB sessions for humans. The level of a sound noise signal presented to the animal decreased with increase in
the α/θ SPD ratio in the occipital lead. Changes in the level of the sound signal did not depend on EEG modulation in the
control series. The animals were trained to correlate changes in the loudness of the sound signal with the power of EEG rhythms
and, in such a way, to control the latter. The α/θ SPD ratio in EEG-FB sessions changed mostly due to a significant increase
in the α rhythm power. The frequency of the impulse activity of NA neurons increased in a parallel manner with such EEG modulation.
Possible mechanisms of the involvement of the cerebral NA system in the formation of the effects of EEG-FB sessions are discussed. 相似文献
8.
I. N. Konareva 《Neurophysiology》2012,43(6):459-467
In a group including 65 adults of both sexes, we examined correlations of the internal/external personality type (locus of
psychological control diagnosed by the Rotter questionnaire) with parameters of the EEG frequency components (rhythms). Multichannel
recording of ongoing EEG was carried out in the resting state; leads were located according to the 10-20 system. Despite natural
high interindividual variability, the subgroup of internals was, in general, characterized by higher spectral powers (SPs)
of the δ, θ, α, and β1 rhythms and a lower SPs of β2 and γ oscillations recorded in the resting state with the eyes closed.
In internals, the modal frequencies of practically all EEG ranges were, on average, somewhat lower. In this subgroup, reaction
of EEG activation related to opening of the eyes was stronger, while the interhemisphere asymmetry was weaker. 相似文献
9.
I. N. Konareva 《Neurophysiology》2005,37(5-6):388-395
We studied changes in the frequency pattern of EEG related to a single session of biological feedback by the EEG characteristics
(neurofeedback, NFB) directed toward an increase in the ratio of α/θ spectral powers (SPs) (an experimental group; 30 subjects)
and to a session of the supposedly indifferent acoustic influence (listening to a musical background; 30 persons). A standard
technique of EEG recording was used; the loudness of white noise overlapping the musical background served as an NFB signal.
EEG was recorded from the C3 and C4 leads. Within the examined experimental group, an NFB session elicited a trend toward
statistically insignificant decreases in the SPs of δ, α, and β rhythms and increases in the SPs of θ and γ EEG components.
Listening to a supposedly neutral musical background by the control group, with no attempts at self-control of the SPs of
EEG rhythms, was followed by rather clear unidirectional (partially significant) decreases in the SPs of θ, α, β, and γ components;
the δ activity in the left hemisphere decreased, while in the right hemisphere it increased. In general, results of the single
NFB session were characterized by a high interindividual variability, which can be related mostly to the specificities of
psychophysiological characteristics of the personality of the tested subject.
Neirofiziologiya/Neurophysiology, Vol. 37, Nos. 5/6, pp. 443–451, September–December, 2005. 相似文献
10.
I. N. Konareva 《Neurophysiology》2006,38(3):201-208
Modifications of different EEG rhythms induced by a single neurofeedback session (by the EEG characteristics) directed toward
an increase in the ratio of the spectral powers (SPs) of the α vs θ oscillations were compared with the psychological characteristics of the tested subjects (the group included 30 persons).
A generally accepted neurofeedback technique was used; the intensity of acoustic white noise served as the feedback signal.
EEG potentials were recorded from the C3 and C4 leads. Psychological testing was carried out using Eysenck’s (EPQ), Rusalov’s
(OST), and (16 PF) questionnaires. The directions of changes in the SPs of EEG frequency components were found to significantly
correlate with some individuality-related peculiarities of the tested subjects. The SP of the δ rhythm correlated with the
EPQ scale “neuroticism,” OST scale “social plasticity,” and 16 PF factors H (“parmia”), I (“premsia”), and Q3 (“self-control of behavior”). The SP of the θ component demonstrated correlations with the OST scales “ergisity,” “plasticity,”
and “social temp” and with 16 PF factors M (“autia”), Q4 (“frustration”), and Q1 (“exvia”). The SP of the α rhythm correlated with 16 PF factors Q3 (“self-control of behavior”), G (“strength of superEgo”), O (“hypothymia”), L (“protension”), and N (“shrewdness”). The SP
of the β rhythm correlated with the OST scale “emotionality,” while that of the γ rhythm showed correlations with the 16 PF
indices L (“protension”) and M (“autia”). Changes in the ratio of the α vs θ SPs correlated with the EPQ scale “neuroticism.” Thus, our data confirm the statement that a high individual variability
of the results of a single (first in the series) neurofeedback session is to a great extent related to peculiarities of the
individual psychological pattern of the subject.
Neirofiziologiya/Neurophysiology, Vol. 38, No. 3, pp. 239–247, May–June, 2006. 相似文献
11.
L. A. Zhavoronkova A. V. Zharikova E. M. Kushnir A. A. Mikhalkova S. B. Kuptsova 《Human physiology》2011,37(6):688-699
Comprehensive EEG and stabilography investigation with separate and simultaneous performance of motor (voluntary postural
control) and cognitive (calculation) tasks has been performed in 20 healthy subjects (22 ± 0.7 years). Specific spatial and
frequency reactive changes have been found during motor task performance. These included an increase in coherence in the EEG
α band for distant derivation pairs in the right hemisphere, as well as in symmetric parietal-occipital areas in both hemispheres.
Cognitive task performance was accompanied by an increase in coherence for the slow bands (δ and θ) with a higher activation
in the left hemisphere and frontal cortex areas. In performing the dual task, one could observe activation of spatial and
frequency changes including both motor and cognitive tasks. In the dual tasks where both components were performed worse as
compared to the control, reactive reorganization of EEG coherence was less pronounced than during the performance of separate
tasks. A decrease in the coherence of the α1 band in the frontal areas appeared as a zone of “conflict of interest” or interference. In dual tasks with better performance
of each component as compared to the control, EEG coherence increased in each specific area, as well as in the areas of “conflict
of interests.” 相似文献
12.
M. L. Ashkinazi 《Human physiology》2010,36(6):678-690
The spectral powers (SPs) of the θ and α EEG rhythms were studied at different stages of visual set in children from five
to seven years of age. Children with a plastic set had a greater α band SP than those with a rigid set. At the set formation
stage, children with a rigid set displayed an increase in the SP of the θ band, which is a manifestation of an “immature”
activation reaction. Children with a plastic set exhibited an increase in the α band SP in the occipital lobes of both hemispheres.
The dynamics of the SP of the EEG rhythms differed in children younger and older than six years. At the set formation stage,
children from five to six years of age exhibited the above-mentioned “immature” activation reaction, while those from six
to seven years of age showed an increase in the α band SP in the occipital lobes. At the set actualization stage, an increase
in the α band SP was observed in the right caudal areas, while the set extinction stage was marked by a bilateral depression
of the α band in the frontal lobes. The importance of the involvement of specific cortical areas in visual perception and
the formation of a plastic set is discussed. 相似文献
13.
Coherence at the frequency of θ, α, and β EEG rhythms was analyzed in 14 adults and 23 children of 7–8 years old while they
performed cognitive tasks requiring an involvement of working memory (WM). We used the pair matching paradigm in which subjects
had to match a pair of stimuli shown in succession in the central visual field. The pairs of verbal and visuo-spatial stimuli
were mixed together and presented in a pseudo random order. Each pair was preceded by a warning signal that did not specify
a modality of upcoming stimuli. We analyzed EEG segments recorded (i) in the rest condition, (ii) prior to the first (reference)
stimulus (maintenance of nonspecific voluntary attention), and (iii) prior to the second (test) stimulus (retention of information
in WM). In the present study we focused on the regulatory functional components of WM, and therefore, the stimulus modality
has not been taken into account. In adults, maintaining nonspecific voluntary attention was accompanied by an increase of
the strength of θ-related functional coupling between medial areas of the frontal cortex and temporal cortical zones and by
a strengthening of local β-related functional connectivity in the fronto-central areas of the cortex. In children, no such
increase was found for θ rhythm; for β rhythm the increase was limited to several short-range functional links. In adults,
the retention of information in WM was accompanied by the growth in α coherence in distant fronto-parietal links, predominantly
in the right hemisphere, while in children information retention was accompanied by the growth of θ coherence in the inferio-temporal
and parietal cortical regions. The results of the study point to a relative immaturity of the mechanisms of executive control
of WM in children of 7–8 years old. 相似文献
14.
E I Shcheblanova 《Zhurnal vysshe? nervno? deiatelnosti imeni I P Pavlova》1988,38(4):627-632
General and local characteristics of EEG activation were studied in frontal, central, temporal and occipital areas of the left and right cerebral hemispheres in 20 adult subjects during execution of various mental tasks. The analysis of the changes of five main EEG rhythms (delta, theta, alpha, beta-1 and beta-2) showed that EEG power decrease in alpha- and beta-frequency ranges is a reliable and sensitive index of brain activation at thinking. On this basis EEG activation mosaics are described at carrying out of each task and its systemic changes at transition from one type of task to another one, depending on their psychological structure--modality and complexity. 相似文献
15.
We studied correlations between the frequency of background impulse activity (BIA) of dopaminergic (DAergic) neurons of the
ventral tegmentum (VT) and spectral power (SP) of the frequency components of EEG samples recorded in awake cats. The EEG
was recorded monopolarly (electrodes were fixed in the cranial bones) from the frontal, occipital, and right and left temporal
regions of the cortex. In a great majority of the cases, the BIA frequency of VT DA-ergic neurons demonstrated significant
positive correlations with changes in the SPs of the alpha and beta EEG rhythms. The closest correlations of the spiking frequency
of DA-ergic cells with the SP of the alpha rhythm was observed in the occipital region, while those with the beta SP were
found in the frontal area. Correlations of the activity of DA-ergic neurons with the SPs of the alpha and beta rhythms in
the left temporal cortical zone were closer, as compared with those in the symmetrical right zone. Correlations of the SPs
of the delta, theta, and gamma EEG components with the discharge frequency of VT DA neurons were of opposite directions, and
in most cases such correlations did not reach the level of significance. The results of this study show that, in some cases,
specific EEG patterns can be considered indicators of the state of the cerebral VT DA-ergic system.
Neirofiziologiya/Neurophysiology, Vol. 40, No. 4, pp. 359–367, July–August, 2008. 相似文献
16.
E. D. Dmitrova N. V. Dubrovinskaya I. P. Lukashevich R. I. Machinskaya V. M. Shklovskii 《Human physiology》2005,31(2):125-131
Comprehensive neuropsychological and electroencephalographic examination of children with dysgraphia and dyslexia demonstrated local EEG anomalies in various zones of the cortex in both hemispheres, mainly in the posterotemporal and/or anterior regions of the left and the posterotemporal regions of the right hemisphere. The character of speech disturbances depended considerably on the localization of the baseline EEG anomalies: disturbances of motor components of writing prevailed when these anomalies were localized in the anterior parts of the left hemisphere, while phonological and morphological speech disturbances were noted in children with local anomalies in the temporal regions of both hemispheres and in posterior association regions, mainly in the right hemisphere. Spectral and correlation analyses of the EEG demonstrated the features of the cerebral organization of verbal activity in children with dysgraphia and dyslexia, namely, weakened intra- and interhemispheric integration of electrical activity of different regions of the brain cortex, particularly temporal and posterior association regions, and predominance of integration based on low-frequency EEG components ( and 1), unlike children without learning disabilities, in whom functional integration of cortical zones involved high-frequency rhythms (2 and ). On the whole, the results of the study testify to an important role of systemic interactions between the regions of the cortex of both hemispheres in the formation of verbal activity.Translated from Fiziologiya Cheloveka, Vol. 31, No. 2, 2005, pp. 5–12.Original Russian Text Copyright © 2005 by Dmitrova, Dubrovinskaya, Lukashevich, Machinskaya, Shklovskii. 相似文献
17.
We studied peculiarities of the spectral characteristics of EEG in 111 healthy adult subjects of both sexes. The levels of
situative anxiety (anxiety state) and personal anxiety were estimated using the Spielberger–Khanin test system. To estimate
anxiety-related properties of the personality, Cattel’s technique 16 PF (form А) was used. Estimates of situative anxiety
demonstrated only two cases of positive correlation with the spectral power density (SPD) of EEG rhythms (SPDs of the beta2
rhythm in the right-hemisphere temporal and occipital regions; recording with the eyes open). Estimates of personal anxiety
positively correlated with the SPDs of the beta1 and (especially) beta2 EEG rhythms. Under conditions with the eyes open,
the number of significant correlations was greater, and correlations themselves were tighter than with the eyes closed. The
closest correlations of the estimates of personal anxiety with the SPDs of the beta rhythm were found in frontal and central
leads of both hemispheres and in parietal and occipital loci of the right hemisphere. Only a single case of correlation of
the alpha rhythm SPD with personal anxiety (negative correlation, a parietal lead in the left hemisphere) was found. At the
same time, rather numerous correlations of the alpha rhythm expression with an index congeneric to anxiety, the C factor by
the Cattel’s questionnaire (emotional stability/instability), were found. Thus, the intense beta EEG rhythm can be considered
an electrographic correlate of high situative and personal anxieties. At the same time, the alpha rhythm power correlates
with the emotional stability of the individual. We suppose that persons with a well-developed alpha rhythm are characterized
by active and stable functioning of the cerebral dopaminergic system; this simultaneously serves as a pre-requisite of high
emotional stability and social adaptability. 相似文献
18.
Changes in EEG power and coherence were studied in ten men and ten women during mental reproduction of dichotically presented lists of words. The EEG was recorded with 14 electrodes located over symmetric points of the left and right hemispheres. In all subjects, the mental reproduction was accompanied by an increase in the power of the 1 rhythm in the frontal regions and a decrease in the power of the 1 and 2 rhythms in the caudal regions of the hemispheres. A decrease in the power of the 2 rhythm in the caudal regions of the hemispheres was greater in women than in men. Gender differences were also observed in the left- and right-hemispheric coherence reactivity. During word reproduction, men showed a higher EEG coherence in the 2 band in the right hemisphere, while women displayed a greater increase in the coherence of the 1 and 2 rhythms in the left hemisphere. Lateral differences in reactivity of the intrahemispheric coherence in these frequency bands were observed only in women and were caused by a decrease in coherent interactions in the right hemisphere and their increase in the left hemisphere. These gender differences can be associated with different strategies of information memorization: men involve predominantly episodic memory, and women use semantic polymodal encoding. 相似文献
19.
D. Mechau S. Mücke H. Liesen M. Wei? 《European journal of applied physiology and occupational physiology》1998,78(4):340-345
This study was designed to measure the electroencephalogram (EEG) after exercise with increasing intensity. In a field test
with increments in running velocity a 2-min EEG was recorded, together with blood lactate concentration and heart rate, after
each stage. An individual protocol was used, with up to six stages of running to ensure comparability of exercise intensity
among the subjects, in each of 19 athletes (17 men, 2 women) experienced in leisure-time running. The exercise consisted initially
of three running stages of aerobic exercise intensity without blood lactate accumulation followed by stages with an increase
of lactate concentration. The protocol of the field test led to a progressive increase in cortical activity directly after
the stages without blood lactate accumulation mainly in the δ frequency band, followed by θ and α-1 frequency band, and less
pronounced in the α-2 and in the β frequency bands. After the stages with an onset and further increase of blood lactate accumulation
significant decreases in the β-2, β-1 and α-1 frequency bands occurred predominantly in temporal (T3, T4, T5, and T6) and
occipital (O1, and O2) electrode positions, indicating a stage-by-stage decrease of activity. This decrease may be explained
by feed-back from working muscle, via afferents to the cortex from intero- and proprio-receptors and affective processes.
This could suggest that through a higher running intensity indicated by an onset of blood lactate accumulation metabolic and
mechanical changes led to alterations within the afferent systems influencing the level of cortical activity.
Accepted: 9 February 1998 相似文献
20.
The role of EEG β-, α-, and θ-activity in the formation of the structure of the spatial interaction of cortical formations
and interhemispheric balance (IB), evaluated on the basis of the matrix of conditional probabilities, were studied in healthy
test subjects occupied with oil refining. Preliminarity, the groups of test subjects with high (I), average (II), and low
(III) adaptivity were distinguished. Individuals with a positive IB prevailed in groups I and II and among the test subjects
with the length of service less than 20 years, and those with negative IB were in the majority in group III and among the
test subjects with the length of service over 20 years. The structure of spatial interaction of EEG waves of test subjects
with high and average adaptivity, as well as those with positive IB and length of service below 20 years, was determined mostly
by α-activity. The spatial pattern of EEG of test subjects with low adaptivity, as well as those with negative IB and length
of service above 20 years, was determined by the interaction of bioelectrical activity mainly in the α- and β-ranges. 相似文献