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ВАРИАБЕЛЬНОСТЬ СЕРДЕЧНОГО РИТМА КОРЕННЫХ ЖИТЕЛЕЙ АРКТИКИ

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Основная коллекция
Артикул: 623375.01.99
Бельчусова, Е. А. ВАРИАБЕЛЬНОСТЬ СЕРДЕЧНОГО РИТМА КОРЕННЫХ ЖИТЕЛЕЙ АРКТИКИ / Е. А. Бельчусова, О. Н. Колосова, Н. В. Мельгуй. - Текст : электронный // Znanium.com. - 2017. - №1-12. - URL: https://znanium.com/catalog/product/529216 (дата обращения: 28.03.2024)
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The motor task performance efficiency was calculated as a percentage of 
«successful intervals» when alpha power EEG increased simultaneously 
with EMG power decreased during actual or mental imagery of motor 
performance. Series of repeated measures analyses of variance ANOVAs 
were run with intra-individual factors CONDITIONS (3 levels: rest, 
motor performance and imagination of motor performance), for men 
TEST_RETEST and for women NEUROHUMORAL STATE (5 levels: menstrual, 
follicular, ovulatory, luteal and premenstrual phases). Separately 
between group comparisons were provided (men vs women).  Whenever 
necessary, Tukey HSD post-hoc test was performed. The level of 
significance was set at p < 0.05. Spearman’s correlations were used to 
estimate intraobserver, interobserver, and test–retest reliability.

RESULTS.  In female subjects upper alpha EEG/EMG ratio in rest 

condition doesn’t affected by neurohumoral states and was not differed 
from men’s values. During actual motor task performance and mental 
imagery upper alpha EEG and EMG levels depends on phase of menstrual 
cycle [F(1,230) ≥15.43, p=0.000]. Efficiency, evaluated as percentage 
of "successful intervals" during motor performance was highest at 
luteal phase (t>9.2, p<0.000), but in men it doesn’t change through 14 
days and was the same as in women at luteal phase. Fluency in actual 
motor task performance and it’s mental imagery are highest too at 
luteal phase [F(1,230) ≥9.12, p=0.000].

CONCLUSIONS. In this study we present evidence of orderly changes 

in EEG/EMG index of psychomotor performance across the menstrual cycle 
in women which provide an explanation for the apparent   logical 
association
between 
sex-related 
patterns 
of 
alpha 
EEG/EMG 
and 

psychomotor ability.

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Bernstein, N.A. (1996). On dexterity and its development. In 

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DOI:10.12737/12299

ВАРИАБЕЛЬНОСТЬ СЕРДЕЧНОГО РИТМА КОРЕННЫХ ЖИТЕЛЕЙ АРКТИКИ

1Е.А.Бельчусова, 1,2О.Н.Колосова, 1Н.В. Мельгуй, 2Б.М.Кершенгольц, 

1И.Л.Саввина