scholarly journals ОСОБЛИВОСТІ ФУНКЦІОНАЛЬНОГО СТАНУ ОРГАНІЗМУ І ОБРОБКИ СЕНСОРНОЇ ІНФОРМАЦІЇ В ОСІБ ЮНАЦЬКОГО ВІКУ

2021 ◽  
Vol 81 (1-2) ◽  
pp. 59-63
Author(s):  
О. S. Voloshyn ◽  
M. V. Hoviak ◽  
O. V. Popadiuk
Keyword(s):  
Heart Rate ◽  
Visual Information ◽  
Visual Memory ◽  
Sensory Information ◽  
Circulatory System ◽  
The Body ◽  
External Respiration ◽  
Physiological Basis ◽  
Satisfactory Level ◽  
Respiratory Systems

The aim of the work is to study the functional indicators of the cardiovascular and respiratory systems, indicators of the efficiency of processing of visual information and motor response in adolescents with different levels of functional reserves of the heart. We studied indicators of heart rate, blood pressure, Skibinsky index, Rosenthal’s test, the speed of the visual-motor reaction (simple and differentiated), the number of errors made during the examination, the analysis of the indicators of the correction test, the volume of operational visual memory, the dynamics of the analysis of Schulte tables, the volume and distribution of attention. The study demonstrated that the functional indicators of the cardiovascular system are within the permissible limits. However, the heart rate of individuals with a satisfactory level of heart efficiency tends to approach the upper physiological limit. Skibinsky’s index corresponds to a satisfactory level for the females. This index indicates the average potential of the external respiration system and the correspondence of activity with the blood circulatory system. For the analysis of Schulte tables, the individuals of the first group spent 161.8 s ± 10.37 s, which is significantly faster than the index of the second group. Studies have not shown a relationship between the level of heart performance and indicators of the distribution of attention. However, the indicators of the volume of operative visual memory in individuals of the first group are much better: 65 % of individuals have a high level (the same index in the second group is 20 %), the participants with a low level of operative visual memory are absent, in contrast to the second group. The speed of simple and differentiated sensorimotor reactions in individuals of the first group is higher than those in the second group by 11.4 % and 10.6 %, respectively. This indicates a sufficient level of plasticity of nervous processes and the efficiency of arousal development. The performance indicators of the cardiovascular and respiratory systems, the speed of reactions of the nervous system of the examined, the efficiency of processing sensory information indicate the maturity of the functional systems of the body and are the physiological basis for the formation of an adequate functional state of the body. Individuals with a Rufier index level above the average showed less tension in the work of the heart and an effective course of sensorimotor reactions, indicating a sufficient level of plasticity of nervous processes.

Analysis of Central Hemodynamic Parameters in Medical Students during the Pre-Examination Study Period

2021 ◽  
pp. 67-73
Author(s):  
VA Belyayeva
Keyword(s):  
Body Mass Index ◽  
Heart Rate ◽  
Medical Students ◽  
Cardiovascular System ◽  
Body Mass ◽  
Circulatory System ◽  
The Body ◽  
Hemodynamic Parameters ◽  
Adaptive Potential ◽  
Central Hemodynamic

Background: One of the main negative factors of the educational environment is the increased stress impact on the cardiovascular system of students preparing for examinations. The cumulative effect of a long-term, systematic exposure to stressors may be accompanied by impaired mental and somatic health of students. The extent of response to stress is individual; it is usually determined by cardiovascular health and a complex of psychophysiological characteristics of the body. Objective: To study the main parameters of central hemodynamics in medical students depending on the body mass index and adaptive potential in the pre-examination study period Materials and methods: In spring–summer 2019, 170 medical students (young men and women aged 20.4 ± 0.3 years) with different adaptive potential of the circulatory system were surveyed during a pre-exam study period to establish their anthropometric indicators, blood pressure and heart rate and to further estimate the body mass index and the main central hemodynamics parameters. Results: The average heart rate of students during the pre-exam study period was 85.4 ± 12.21 beats per minute. The level of metabolic and energy processes in the myocardium was characterized as moderate with a tendency to insufficient functional capacity of the cardiovascular system (CI = 90.4 ± 1.22). Significant differences were revealed in a number of parameters un-der study depending on gender, body mass index (F = 3.99; p = 0.00890) and the adaptive potential of the circulatory system (F = 23.08; p = 0.00000). Conclusions: In the pre-examination study period, both the heart rate and the Kerdo index among the students were elevated, which indicates the predominance of sympathetic autonomic stress. The students with tense adaptation mechanisms demonstrated higher values of certain hemodynamic parameters. The pulse pressure and the Robinson index were higher in overweight students compared to their peers with a normal body mass index. None of the students with class 1 obesity had a satisfactory level of adaptation of the circulatory system. The analysis of central hemodynamic parameters enables the assessment of tolerance of the cardiovascular system of students to the burden of learning.

Treatment of Medial Medullary Infarction Using a Novel iNems Training: A Case Report and Literature Review

2019 ◽  
Vol 50 (6) ◽  
pp. 429-435
Author(s):  
Takayuki Kodama ◽  
Osamu Katayama ◽  
Hideki Nakano ◽  
Tomohiro Ueda ◽  
Shin Murata
Keyword(s):  
Visual Information ◽  
Pain Catastrophizing ◽  
Sensory Information ◽  
The Body ◽  
Arm Pain ◽  
Motor Paralysis ◽  
Old Japanese ◽  
Severe Motor ◽  
Medial Medullary Infarction ◽  
Medullary Infarction

Objective. We describe the case of a 66-year-old Japanese male patient who developed medial medullary infarction along with severe motor paralysis and intense numbness of the left arm, pain catastrophizing, and abnormal physical sensation. We further describe his recovery using a new imagery neurofeedback-based multisensory systems (iNems) training method. Clinical Course and Intervention. The patient underwent physical therapy for the rehabilitation of motor paralysis and numbness of the paralyzed upper limbs; in addition, we implemented iNems training using EEG activity, which aims to synchronize movement intent (motor imagery) with sensory information (feedback visual information). Results. Considerable improvement in motor function, pain catastrophizing, representation of the body in the brain, and abnormal physical sensations was accomplished with iNems training. Furthermore, iNems training improved the neural activity of the default mode network at rest and the sensorimotor region when the movement was intended. Conclusions. The newly developed iNems could prove a novel, useful tool for neurorehabilitation considering that both behavioral and neurophysiological changes were observed in our case.

scholarly journals The influence of Kyokushinkai Karate classes on the adaptive capabilities of adolescents

2020 ◽  
Vol 5 (4) ◽  
pp. 48
Author(s):  
Y.V. Kyrpenko ◽  
M.I. Budur ◽  
S.V. Palevych ◽  
О.G. Poddubny
Keyword(s):  
Physical Education ◽  
Circulatory System ◽  
The Body ◽  
Control Group ◽  
Physical Culture ◽  
External Respiration ◽  
Energy Potential ◽  
Adaptive Capabilities ◽  
Adaptation Processes ◽  
The Impact

<p><strong>The purpose of the work</strong><strong>: </strong>to determine the impact of Kyokushinkai Karate classes on the ability to adapt to different physical activities of boys of 10-12 years of age during classes.</p><p><strong>Material and methods</strong><strong>. </strong>78 boys of 10-12 years were surveyed, 27 of them expressed their desire to participate in the sports section of Kyokushinkai Karate (EG). CG (29) includes guys who do not have contraindications for playing sports. The essence of the forming experiment was to compare the growth rates of individual indicators of physical qualities, functional preparedness of children who attended the Kyokushinkai Karate training program (experimental group - EG) with children who were engaged in physical education only during physical culture lessons (control group - CG). During the year a monitoring examination of children is carried out to assess physical development, adaptation to exercise, adaptive potential of the circulatory system, the functional state of the apparatus of external respiration, the energy potential of the organism, physical fitness and methods of mathematical statistics.</p><p><strong>Results</strong><strong>. </strong>The plan of preparation of training groups on the basis of rational sequence of use of a set and volume of means and methods of physical education of normative part of the сurriculum "Kyokushinkai Karate" is presented. Adaptation processes occurring in the body of boys, during the acquisition of knowledge and skills within the walls of the school are determined by a number of educational, behavioral, everyday and other factors, each of which has a specific purposefulness to achieve a useful end result of learning. The course of study at school is undoubtedly accompanied by the adaptation of children to the new mode of study, rest, psychological and physical activity, and the question of the dynamics of indicators of functional systems of the child's organism came to the plane of our research.</p><p><strong>Conclusion. </strong>In the course of the research, we came to the conclusion that the plan developed and implemented in the sports circles improves the adaptation capabilities of the boys of this age group during Kyokoshinkai karate classes.</p>

scholarly journals The influence of cycling on the functional state of young athletes 14-15 years old

2020 ◽  
pp. 148-152
Author(s):  
Maryna Prudnikova
Keyword(s):  
Heart Rate ◽  
Functional State ◽  
Vital Capacity ◽  
Physical Exertion ◽  
The Body ◽  
Primary Data ◽  
Mountain Bike ◽  
Young Athletes ◽  
Significant Difference ◽  
Respiratory Systems

At present, due to the constant growth of sports results and intensified competition at competitions of various levels in cycling (MTB), the problem of adaptation of the body to specific physical loads is becoming urgent As you know, the most violent processes in the body of a young man occur in the period from 13 to 15 years old, where all the functions and systems of a young body under the influence of physical exertion are of particular importance. Many works have shown that at a young age it is impossible to predict sports results in a chosen sport without taking into account functional characteristics. The article presents the indicators of the cardiovascular and respiratory systems of the body of young athletes 14-15 years old, who specialize in mountain bike. Under the influence of specific physical loads, changes in the functional state of young athletes of 14-15 years old in the basic, pre-competitive and restorative mesocycles were determined. The aim of the work was to determine the changes in the work of the cardiovascular and respiratory systems of the organism of young athletes 14-15 years old, specializing in mountain bike. A significant difference was found in the indicators of heart rate, maximum oxygen consumption, vital capacity of the lungs in the recovery and maintenance microcycles of the recovery mesocycle. The statistical difference was determined in terms of systolic and diastolic blood pressure (t=2.61; t=2.73; p<0.05), heart rate (t=2.51; p<0.05), vital capacity of the lungs (t=2.28; p<0.05) young athletes 14-15 years old in the recovery and maintenance microcycles of the recovery mesocycle relative to the primary data.

scholarly journals Output planning at the input stage in visual working memory

2021 ◽  
Vol 7 (13) ◽  
pp. eabe8212
Author(s):  
Sage E. P. Boettcher ◽  
Daniela Gresch ◽  
Anna C. Nobre ◽  
Freek van Ede
Keyword(s):  
Working Memory ◽  
Visual Information ◽  
Visual Memory ◽  
Early Stage ◽  
Sensory Information ◽  
Motor Task ◽  
Motor Memory ◽  
Action Plans ◽  
Action Preparation ◽  
Sensory Encoding

Working memory serves as the buffer between past sensations and future behavior, making it vital to understand not only how we encode and retain sensory information in memory but also how we plan for its upcoming use. We ask when prospective action goals emerge alongside the encoding and retention of visual information in working memory. We show that prospective action plans do not emerge gradually during memory delays but are brought into memory early, in tandem with sensory encoding. This action encoding (i) precedes a second stage of action preparation that adapts to the time of expected memory utilization, (ii) occurs even ahead of an intervening motor task, and (iii) predicts visual memory–guided behavior several seconds later. By bringing prospective action plans into working memory at an early stage, the brain creates a dual (visual-motor) memory code that can make memories more effective and robust for serving ensuing behavior.

The influence of osteopathic correction on the rate of various rhythms of the body

2019 ◽  
pp. 64-71 ◽  
Author(s):  
A. E. Chernikova ◽  
Yu. P. Potekhina
Keyword(s):  
Heart Rate ◽  
Respiratory Rate ◽  
Age Groups ◽  
Biomechanical Properties ◽  
Dispersion Analysis ◽  
The Body ◽  
Body Tissues ◽  
Age Related ◽  
Significant Difference ◽  
Before And After

Introduction. An osteopathic examination determines the rate, the amplitude and the strength of the main rhythms (cardiac, respiratory and cranial). However, there are relatively few studies in the available literature dedicated to the influence of osteopathic correction (OC) on the characteristics of these rhythms.Goal of research — to study the influence of OC on the rate characteristics of various rhythms of the human body.Materials and methods. 88 adult osteopathic patients aged from 18 to 81 years were examined, among them 30 men and 58 women. All patients received general osteopathic examination. The rate of the cranial rhythm (RCR), respiratory rate (RR) heart rate (HR), the mobility of the nervous processes (MNP) and the connective tissue mobility (CTM) were assessed before and after the OC session.Results. Since age varied greatly in the examined group, a correlation analysis of age-related changes of the assessed rhythms was carried out. Only the CTM correlated with age (r=–0,28; p<0,05) in a statistically significant way. The rank dispersion analysis of Kruskal–Wallis also showed statistically significant difference in this indicator in different age groups (p=0,043). With the increase of years, the CTM decreases gradually. After the OC, the CTM, increased in a statistically significant way (p<0,0001). The RCR varied from 5 to 12 cycles/min in the examined group, which corresponded to the norm. After the OC, the RCR has increased in a statistically significant way (p<0,0001), the MNP has also increased (p<0,0001). The initial heart rate in the subjects varied from 56 to 94 beats/min, and in 15 % it exceeded the norm. After the OC the heart rate corresponded to the norm in all patients. The heart rate and the respiratory rate significantly decreased after the OC (р<0,0001).Conclusion. The described biorhythm changes after the OC session may be indicative of the improvement of the nervous regulation, of the normalization of the autonomic balance, of the improvement of the biomechanical properties of body tissues and of the increase of their mobility. The assessed parameters can be measured quickly without any additional equipment and can be used in order to study the results of the OC.

Emotional processing and the autonomic nervous system: a comprehensive meta-analytic investigation

2018 ◽  
Author(s):  
Pedro Silva Moreira ◽  
Pedro Chaves ◽  
Nuno Dias ◽  
Patrício Costa ◽  
Pedro Rocha Almeida
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Skin Conductance ◽  
Emotional Processing ◽  
Skin Conductance Level ◽  
The Body ◽  
Analytic Investigation ◽  
Physiological Basis ◽  
Autonomic Nervous ◽  
Conductance Level

Background: The search for autonomic correlates of emotional processing has been a matter of interest for the scientific community with the goal of identifying the physiological basis of emotion. Despite an extensive state-of-the-art exploring the correlates of emotion, there is no absolute consensus regarding how the body processes an affective state.Objectives: In this work, we aimed to aggregate the literature of psychophysiological studies in the context of emotional induction. Methods: For this purpose, we conducted a systematic review of the literature and a meta-analytic investigation, comparing different measures from the electrodermal, cardiovascular, respiratory and facial systems across emotional categories/dimensions. Two-hundred and ninety-one studies met the inclusion criteria and were quantitatively pooled in random-effects meta-analytic modelling. Results: Heart rate and skin conductance level were the most reported psychophysiological measures. Overall, there was a negligible differentiation between emotional categories with respect to the pooled estimates. Of note, considerable amount of between-studies’ heterogeneity was found in the meta-analytic aggregation. Self-reported ratings of emotional arousal were found to be associated with specific autonomic-nervous system (ANS) indices, particularly with the variation of the skin conductance level. Conclusions: Despite this clear association, there is still a considerable amount of unexplained variability that raises the need for more fine-grained analysis to be implemented in future research in this field.

FUNCTIONAL STATUS AND ADAPTIVE POTENTIAL IN FOREIGN STUDENTS WITH DIFFERENT TYPES OF VEGETATIVE REGULATION DURING TUITION

2020 ◽  
pp. 118-126
Author(s):  
A.M. Satarkulova
Keyword(s):  
Heart Rate ◽  
Foreign Students ◽  
Autonomic Regulation ◽  
The Body ◽  
Functional Changes ◽  
Different Types ◽  
Type 3 ◽  
Adaptive Abilities

The assessment and dynamic control over students’ status is a very important task. It allows timely detection of prenosological status prior to pathology and health maintenance in students. The objective of the paper is to assess the adaptive abilities of the body, to analyze changes in heart rate variability indicators in students with various types of autonomic regulation, to identify prenosological status and precursory pathological symptoms. Materials and Methods. The study enrolled 302 students from India, aged 21.54±1.43. Programming complex «Psychophysiologist» was used to register the main HRV parameters within 5 minutes. Health status was evaluated according to the index of functional changes and the scale of functional states. Results. N.I. Shlyk (2009) distinguished two groups of students with different types of autonomic regulation: type 1 (53 %) with moderate and type 2 (5 %) with marked characteristics of central regulation profile, type 3 (35 %) with moderate and type 4 (7 %) with marked characteristics of autonomous regulation profile. Main parameters of HRV and adaptation potential were defined for each student.All the parameters characterized functional and health status. Conclusions. It was shown that 82 % of trial subjects (type 1), 53 % (type 2), 94 % (type 3) and 95 % (type 4) demonstrated satisfactory adaptation and their physiological processes were at an optimal level. 18 % of students (type 1) demonstrated reduced adaptive abilities of the body. Moreover, they were under moderate stress. 47 % of subjects (type 2) were also under a significant stress, which was proven by excessively high SI, low SDNN and TP, and an increased index of functional changes. 5 % of students (type 4) revealed dysfunctional characteristics in the heart rhythm, peculiar to pathology. Keywords: foreign students, heart rate variability, types of autonomic regulation, adaptation potential, functional status. Оценка состояния студентов и динамический контроль за ним является важной задачей, поскольку позволяет своевременно выявлять у студентов донозологические состояния, предшествующие патологии, и способствовать сохранению здоровья. Цель. Оценка адаптивных возможностей организма, анализ изменений показателей вариабельности сердечного ритма у студентов с различными типами вегетативной регуляции, выявление донозологических состояний и ранних признаков патологии. Материалы и методы. В исследовании участвовало 302 студента в возрасте 21,54+1,43 года из Индии. Регистрировались основные параметры ВСР в течение 5 мин с использованием программно-аппаратного комплекса «Психофизиолог». Состояние и уровень здоровья оценивались по индексу функциональных изменений и шкале функциональных состояний. Результаты. По способу, предложенному Н.И. Шлык, выделены группы студентов с различными типами вегетативной регуляции: I (53 %) и II типы (5 %) – с умеренным и выраженным преобладанием центрального контура регуляции соответственно, III (35 %) и IV типы (7 %) – с умеренным и выраженным преобладанием автономного контура регуляции соответственно. У каждого из студентов определены основные параметры ВСР и адаптационного потенциала, характеризующие функциональное состояние и уровень здоровья. Выводы. Показано, что для 82 % обследуемых с I типом, 53 % со II типом, 94 % c III типом и 95 % с IV типом регуляции характерно состояние удовлетворительной адаптации, физиологические процессы сохраняются на оптимальном уровне. В группе студентов I типа у 18 % студентов адаптивные возможности организма снижены, выявлено состояние умеренного напряжения. У 47 % обследуемых II типа также зафиксировано состояние резко выраженного напряжения, индикатором которого является чрезмерно высокое значение SI, низкие величины SDNN и ТP, повышенное значение индекса функциональных изменений. В группе студентов с IV типом у 5 % учащихсяв регуляции ритма сердца выявлены дисфункциональные признаки, характерные для патологии. Ключевые слова: иностранные студенты, вариабельность сердечного ритма, типы вегетативной регуляции, адаптационный потенциал, функциональное состояние.

DEVELOPMENT OF A DEVICE FOR CONTROL OF THE STATE OF THE ORGANISM BASED ON PHOTOPLETISMOGRAPHY USING TECHNOLOGIES OF DIGITAL ADAPTIVE FILTRATION

2020 ◽  
pp. 100-107
Author(s):  
Алексей Дмитриевич Акишин ◽  
Иван Павлович Семчук ◽  
Александр Петрович Николаев
Keyword(s):  
Heart Rate ◽  
Cardiovascular System ◽  
Adaptive Filtering ◽  
Least Squares Method ◽  
Optimal Algorithm ◽  
Heart Diseases ◽  
Cardiac Activity ◽  
Motion Artifacts ◽  
The Body ◽  
Advantages And Disadvantages

Постоянно растущий интерес к разработке новых неинвазивных и безманжетных методов измерения параметров сердечной деятельности, использование которых давало бы возможность непрерывного и удаленного контроля сердечно-сосудистой системы, обуславливает актуальность данной работы. В многочисленных публикациях продолжаются обсуждения преимуществ и недостатков различных методов ранней диагностики сердечно-сосудистых заболеваний. Однако артефакты движения являются сильной помехой, мешающей точной оценке показателей функционирования сердечно-сосудистой системы. Одним из перспективных методов контроля является метод оценки физиологических параметров с использованием фотоплетизмографии. Данная статья посвящена разработке устройства для фотоплетизмографических исследований и алгоритмических методов обработки регистрируемых сигналов для обеспечения мониторинга сердечного ритма с заданной точностью. В работе используются технологии цифровой адаптивной фильтрации полученных сигналов для мониторинга сердечного ритма в условиях внешних механических и электрических помеховых воздействий, ухудшающих точностные характеристики системы, а также разработана архитектура системы и изготовлен макет устройства, который позволил провести измерения для определения оптимального алгоритма цифровой обработки сигналов. При использовании устройства применялись методы адаптивной фильтрации на основе фильтров Винера, фильтров на основе метода наименьших квадратов и Калмановской фильтрации. Разработанное устройство для фотоплетизмографических исследований обеспечило возможность мониторинга сердечного ритма с заданной точностью, контроля текущего состояния организма и может быть использовано в качестве средства диагностики заболеваний сердца The constantly growing interest in the development of new non-invasive and cuff-free methods for measuring the parameters of cardiac activity, the use of which would give the possibility of continuous and remote monitoring of the cardiovascular system, determines the relevance of this work. Numerous publications continue to discuss the advantages and disadvantages of various methods of early diagnosis of cardiovascular disease. However, motion artifacts are a strong hindrance to the accurate assessment of the performance of the cardiovascular system. One of the promising control methods is the method for assessing physiological parameters using photoplethysmography. This article is devoted to the development of a device for photoplethysmographic studies and algorithmic methods for processing recorded signals to ensure monitoring of the heart rate with a given accuracy. The work uses technologies of digital adaptive filtering of the received signals to monitor the heart rate in conditions of external mechanical and electrical interference, which worsen the accuracy characteristics of the system, as well as the architecture of the system and a prototype of the device, which made it possible to carry out measurements to determine the optimal algorithm for digital signal processing. When using the device, the methods of adaptive filtering based on Wiener filters, filters based on the least squares method and Kalman filtering were used. The developed device for photoplethysmographic studies provided the ability to monitor the heart rate with a given accuracy, control the current state of the body and can be used as a means of diagnosing heart diseases

scholarly journals The Mechanism of Secretion and Metabolism of Gut-Derived 5-Hydroxytryptamine

2021 ◽  
Vol 22 (15) ◽  
pp. 7931
Author(s):  
Ning Liu ◽  
Shiqiang Sun ◽  
Pengjie Wang ◽  
Yanan Sun ◽  
Qingjuan Hu ◽  
...  
Keyword(s):  
Cell Metabolism ◽  
Circulatory System ◽  
Vital Role ◽  
The Body ◽  
Neuroendocrine Cells ◽  
Intestinal Lumen ◽  
Paracrine Signaling ◽  
Inflammatory Conditions ◽  
Epithelial Development ◽  
Ec Cells

Serotonin, also known as 5-hydroxytryptamine (5-HT), is a metabolite of tryptophan and is reported to modulate the development and neurogenesis of the enteric nervous system, gut motility, secretion, inflammation, sensation, and epithelial development. Approximately 95% of 5-HT in the body is synthesized and secreted by enterochromaffin (EC) cells, the most common type of neuroendocrine cells in the gastrointestinal (GI) tract, through sensing signals from the intestinal lumen and the circulatory system. Gut microbiota, nutrients, and hormones are the main factors that play a vital role in regulating 5-HT secretion by EC cells. Apart from being an important neurotransmitter and a paracrine signaling molecule in the gut, gut-derived 5-HT was also shown to exert other biological functions (in autism and depression) far beyond the gut. Moreover, studies conducted on the regulation of 5-HT in the immune system demonstrated that 5-HT exerts anti-inflammatory and proinflammatory effects on the gut by binding to different receptors under intestinal inflammatory conditions. Understanding the regulatory mechanisms through which 5-HT participates in cell metabolism and physiology can provide potential therapeutic strategies for treating intestinal diseases. Herein, we review recent evidence to recapitulate the mechanisms of synthesis, secretion, regulation, and biofunction of 5-HT to improve the nutrition and health of humans.

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