Wyniki wyszukiwania - BazTech

1

The VR Therapy platform for social anxiety treatment

Bartyna Waldemar, Stępniak Marcin

Studia Informatica : systems and information technology

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2023

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Vol. 2(29)

27--39

EN

During the period of online learning related to the pandemic situation, a cooperation was established between the Institute of Computer Science and the Institute of Pedagogy at Siedlce University of Natural Sciences and Humanities to create a therapeutic environment in virtual reality for the treatment of social anxiety or shyness. Anxiety disorders are classified as the most common mental disorder in children and adolescents, their prevalence is estimated at 2-10 percent of the population. The phenomenon has increased due to the pandemic situation. The aim of the project is to develop a low-cost and user-friendly technological solution using virtual reality and biofeedback elements for social anxiety therapy, dedicated to children and adolescents aged 12 to 19.

2

EEG signal analysis for monitoring concentration of operators

Rykała Łukasz

Journal of Automation Mobile Robotics and Intelligent Systems

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2023

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Vol. 17, No. 1

30--39

EN

Often, operators of machines, including unmanned ground vehicles (UGVs) or working machines, are forced to work in unfavorable conditions, such as high tem‐ peratures, continuously for a long period of time. This has a huge impact on their concentration, which usu‐ ally determines the success of many tasks entrusted to them. Electroencephalography (EEG) allows the study of the electrical activity of the brain. It allows the determination, for example, of whether the operator is able to focus on the realization of his tasks. The main goal of this article was to develop an algorithm for determining the state of brain activity by analyzing the EEG signal. For this purpose, methods of EEG sig‐ nal acquisition and processing were described, including EEG equipment and types and location of electrodes. Particular attention was paid to EEG signal acquisition, EEG signal artifacts, and disturbances, and elements of the adult’s correct EEG recording were described in detail. In order to develop the algorithm mentioned, basic types of brain waves were discussed, and exem‐ plary states of brain activity were recorded. The influ‐ ence of technical aspects on the recording of EEG sig‐ nals was also emphasized. Additionally, a block diagram was created which is the basis for the operation of the said algorithm. The LabVIEW environment was used to implement the created algorithm. The results of the research showing the operation of the developed EEG signal analyzer were also presented. Based on the results of the study, the EEG analyzer was able to accurately determine the condition of the examined person and could be used to study the concentration of machine operators.

3

Balance control via tactile biofeedback in children with cerebral palsy

Argunsah Hande, Yalcin Begum

Acta of Bioengineering and Biomechanics

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2023

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Vol. 25, no. 1

161--171

EN

Children with cerebral palsy have limitations in utilizing neural information to perform smooth movement and maintain balance during walking. This study aimed to develop a wearable sensor that tracks balance continuously and provides haptic biofeedback to its user through real-time vibration stimulus to assist patients with balance and postural control impairments such as cerebral palsy. Methods: Twelve children with cerebral palsy and 12 age-matched typically developed children used the sensor during walking at a self- -selected speed. The lower extremity joint kinematics, center of mass, and spatial-temporal parameters were recorded with Xsens MVN during “with” and “without” biofeedback conditions. Results: The sensor did not disturb healthy gait. Pearson correlation coefficient and Root Mean Square Error techniques showed that biofeedback regulated the gait parameters and trunk stability of the CP group. The extended stance percentage (without BF: 73.91% ± 10.42, with BF: 63.53% ± 2.99), step width (without BF: 0.20 m ± 0.05, with BF: 0.18 m ± 0.07), and step time (without BF: 1.55 s ± 1.07, with BF: 0.73 s ± 0.14) parameters decreased. Similarly, cadence and walking speed increased. Conclusions: Obtained results indicated that this wearable sensor can be integrated into the physical therapy and rehabilitation process of children with balance and postural control impairments to improve motor learning and balance control. The present findings contribute to a better understanding of the adaptation of innovative engineering applications with rehabilitation processes, which, in turn, could assist patients with balance impairments and facilitate their integration into society.

4

The influence of environmental conditions on the accuracy of QEEG electroencephalography

Prauzner Tomasz, Prauzner Kacper, Ptak Paweł, Noga Henryk, Migo Piotr, Depešová Jana

Przegląd Elektrotechniczny

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2020

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R. 96, nr 4

86--89

EN

The article presents the results of investigations of selected factors interfering the QEEG electroencephalography performed with the Mitsar EEG 202 apparatus and the LZ-643 magnetic field strength meter. The accuracy of QEEG research depends on the occurrence of so-called artifacts, which are the source of magnetic fields occurring in the environment and disturbances in the power supply for measuring apparatus. The research was carried out in the Laboratory of Experimental Research Biofeedback of the Jan Dlugosz University in Czestochowa.

PL

W artykule przedstawiono wyniki badań wybranych czynników zakłócających prowadzonych badań elektroencefalograficznych QEEG za pomocą aparatury Mitsar EEG 202 oraz miernika natężenia pola magnetycznego typu LZ-643. Dokładność badań QEEG jest uzależniona od występowania tzw. artefaktów, których źródłem są występujące w otoczeniu pola magnetyczne oraz zakłócenia w sieci zasilającej aparaturę pomiarową. Badania przeprowadzono w Laboratorium Badań Eksperymentalnych Biofeedback Uniwersytetu Humanistyczno-Przyrodniczego im. Jana Długosza w Częstochowie.

5

Ocena skuteczności ćwiczeń kończyny górnej, wykonywanych w przestrzeni wirtualnej przy zastosowaniu biologicznego sprzężenia zwrotnego, u pacjentów po udarze niedokrwiennym mózgu – doniesienia wstępne

Wieczorek Michał, Makuch Maciej

Aktualne Problemy Biomechaniki

|

2019

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z. 17

123--130

PL

Celem badań była ocena wpływu programu rehabilitacji pacjentów po udarze na funkcjonalność, motorykę, zakresy ruchomości oraz wartości siły kończyny górnej, uzupełnionego o ćwiczenia w przestrzeni wirtualnej oraz porównanie osiągniętych wyników z grupą kontrolną. Do oceny stanu funkcjonalnego pacjentów użyto testów Fugl-Mayer Motor Assessment, Frenchy Arm Test oraz skali Lovetta. Dokonano pomiarów zakresu ruchomości w stawach barkowym, promieniowo-nadgarstkowym (płaszczyzny: czołowa i strzałkowa), łokciowym, jak również zmierzono wartości siły chwytów: cylindrycznego, szczypcowego, bocznego i trójpunktowego.

EN

The aim of the study was to assess the impact of post-stroke rehabilitation program on functionality, motor skills, mobility ranges and upper limb strength values, supplemented with VR exercises and comparison of the results obtained with the control group. The Fugl-Mayer Motor Assessment, the Frenchy Arm Test and the Lovett scale were used to assess the functional status of the patients. Measurements of the range of motion in shoulder, radial-wrist joints (planes: frontal and sagittal) and elbow were measured, as well as the values of grip strength: cylindrical, pincer, lateral and three-point.

6

Interfejs mózg-komputer oraz diagnostyka EEG stanu aktywacji mózgu w treningu sportowym: meta-analiza

Nawrocka M.

Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna

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2017

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Vol. 23, nr 3

195--199

PL

Praca dotyczy obszaru badań związanych z pomiarami i przetwarzaniem sygnału elektroencefalograficznego oraz bezpośredniej komunikacji aktywacji mózgu z urządzeniem zewnętrznym za pomocą systemów zawierających interfejs mózg-komputer (ang. BCI - brain computer interface) w celu modyfikacji klasycznego podejścia metodycznego w sporcie. Osiąganie wyników sportowych zbliża się do granic przystosowania ustroju ludzkiego. Natomiast poszukiwanie kryteriów i wysokiej wartości diagnostycznej potencjału sportowego oraz określenie tej wartości z pewnością spełni funkcję predykcyjną w szkoleniu sportowym. Badania wskazują na to, że wdrożenie metody sprzężenia zwrotnego EEG do treningu sportowego wpływa na poprawę stanu funkcjonalnego organizmu, a w konsekwencji polepszenie wyników w sporcie.

EN

The paper concerns the research related to the measurement and electroencephalographic signal processing and direct communication of brain with an external device using a system containing a brain-computer interface (BCI) for the modification of the classical methodological approach in sport. Achieving better sports results is approaching the limits of adaptability of the human organism. Establishing reliable criteria and high value diagnostics of sport potential and determination of this value, will be a prediction factor in sports training. The implementation of the EEG biofeedback method in sports training will improve the functional status of the organism, and consequently, may contribute to better sport results.

7

Evaluation of the impact of exercise of gait on a treadmill on balance of people who suffered from cerebral stroke

Drużbicki M., Przysada G., Guzik A., Kwolek A., Brzozowska-Magoń A., Sobolewski M.

Acta of Bioengineering and Biomechanics

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2016

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Vol. 18, no. 4

41--48

EN

Purpose: The aim of the study is to define the impact of exercise on a treadmill on static balance and stability of posture in a group of patients after cerebral stroke rehabilitated in a late period, with an application of a treadmill with the function of visual biofeedback. Methods: The examination was carried out in a group of 46 people in a late period after ischemic cerebral stroke. The patients examined were randomly put to a group with intervention (n = 23), in which a rehabilitation programme with an application of a treadmill with the visual feedback function was realized and to a control group (n = 23). They evaluated balance in standing on both feet by means of a force plate, symmetry of load of lower limbs and dynamic balance in Up & Go test. Results: A statistically significant change of stabilometric parameters was observed only in the area of postural sways of the centre of pressure (COP). A significant improvement of the symmetry of load of lower limbs in standing ( p = 0.0266) was diagnosed in the examined group after the end of the programme. After the end of the programme no significant difference between the group with intervention and the control group as for a change of balance of the examined patients was found. Conclusions: In the examined group in the chronic period after cs no significant improvement of stabilometrically evaluated balance was obtained, but improvement of the symmetry of load of lower limbs as well as improvement of dynamic balance were observed.

8

Bioelectrical activity of the pelvic floor muscles after 6-week biofeedback training in nulliparous continent women

Chmielewska D., Stania M., Smykla A., Kwaśna K., Błaszczak E., Sobota G., Skrzypulec-Plinta V.

Acta of Bioengineering and Biomechanics

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2016

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Vol. 18, no. 3

105--113

EN

Purpose: The aim of the study was to evaluate the effects of a 6-week sEMG-biofeedback-assisted pelvic floor muscle training program on pelvic floor muscle activity in young continent women. Methods: Pelvic floor muscle activity was recorded using a vaginal probe during five experimental trials. Biofeedback training was continued for 6 weeks, 3 times a week. Muscle strenghtening and endurance exercises were performed alternately. SEMG (surface electromyography) measurements were recorded on four different occasions: before training started, after the third week of training, after the sixth week of training, and one month after training ended. Results: A 6-week sEMG-biofeedback-assisted pelvic floor muscle training program significantly decreased the resting activity of the pelvic floor muscles in supine lying and standing. The ability to relax the pelvic floor muscles after a sustained 60-second contraction improved significantly after the 6-week training in both positions. SEMG-biofeedback training program did not seem to affect the activity of the pelvic floor muscles or muscle fatigue during voluntary pelvic floor muscle contractions. Conclusions: SEMG-biofeedback-assisted pelvic floor muscle training might be recommended for physiotherapists to improve the effectiveness of their relaxation techniques.

9

The evolution of devices and systems supporting rehabilitation of lower limbs

Olinski M., Lewandowski B., Gronowicz A.

International Journal of Applied Mechanics and Engineering

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2015

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Vol. 20, no. 1

147--158

EN

This paper presents the process of development, as well as examples of devices and systems supporting rehabilitation of the human lower extremities, developed independently over the years in many parts of the world. Particular emphasis was placed on indicating, which major groups of devices supporting kinesitherapy of the lower limbs can be distinguished, what are the important advantages and disadvantages of particular types of solutions, as well as what directions currently dominating in development of rehabilitation systems may be specified. A deeper analysis and comparison of several selected systems was also conducted, resulting in gathering the outcomes in two tables. They focused on a few features of mechanical design, especially the devices’ kinematic structures, and devices’ additional functions associated with, among others, interaction, as well as diagnosis of the limb's state and the progress of rehabilitation.

10

The neurofeedback method – how to train the brain

Niedbalski P., Ogniewski P., Filipowicz S. F.

Przegląd Elektrotechniczny

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2014

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R. 90, nr 4

249--251

EN

This text discusses neurofeedback training, explains the concept of such training as well as the issues and problems involved. It points out the areas and medical problems where this method is useful. Finally, the text attempts to present the neurofeedback from technical, construction and user perspectives.

PL

Artykuł ten oparty jest na zagadnieniu treningu neurofeedback. Stara się przybliżyć, na czym polega koncepcja takiego treningu, z jakimi zagadnieniami jest związany. Wskazuje dziedziny i problemy, w których taka metoda terapii jest przydatna. Stara się przedstawić zagadnienia związane z neurofeedbackiem zarówno od strony konstrukcyjnej, technicznej jak i użytkowej.

11

Stabilografia nadążna w procesie przywracania symetrii postawy

Kidoń Z., Kania D., Kania K.

Przegląd Elektrotechniczny

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2013

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R. 89, nr 8

87--93

PL

W artykule zaprezentowano metodę oceny i wspomagania rehabilitacji osób z zaburzonym stereotypem postawy, ze szczególnym uwzględnieniem dysfunkcji dolnej partii układu kostno-mięśniowego. Przedstawiana metoda wykorzystuje dwa zagadnienia. Po pierwsze, przedstawiono sposób obiektywnej oceny stanu pacjenta, który sprowadza się do odpowiedniej parametryzacji trajektorii stabilograficznej. Drugie zagadnienie wiąże się z opracowaniem i badaniem skuteczności nowej metody adaptacyjnej rehabilitacji, wykorzystującej platformę stabilograficzną z biologicznym sprzężeniem zwrotnym. W artykule przedstawiono również wyniki badań klinicznych.

EN

The examination and rehabilitations system for patients with disturbed stereotype of postures especially with dysfunction of lower part of musculoskeletal system is presented. The proposed method is based on two ideas. The method of objective assessment of condition of patient posture is proposed at first. The goal is achieved by posturographic trajectory analysis with the use of proposed methods. The second idea involves the development and evaluation of the new, adaptive rehabilitation method that uses posturographic platform with biofeedback. The results of clinical experiments are presented too.

12

Neurofeedback - eksperymenty w LabVIEW

Rak R. J., Majkowski A., Kołodziej M., Sułko G.

Przegląd Elektrotechniczny

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2013

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R. 89, nr 10

263-265

PL

W artykule przedstawiono aplikację do samodzielnego treningu umysłu z wykorzystaniem neurofeedbacku. Aplikacja została stworzona w środowisku LabVIEW, z użyciem otwartej platformy BCI2000. Najważniejsze części aplikacji to: moduł zbierania danych oraz moduł przetwarzania sygnału EEG przy użyciu szybkiego przekształcenia Fouriera. Kluczowym elementem systemu jest moduł, który dla określonej przez użytkownika częstotliwości, dokonuje pomiaru energii sygnału. Wyniki wyświetlane są na panelu aplikacji użytkownika, zapewniając pożądane sprzężenie zwrotne.

EN

This paper presents an application for self-training of the mind with the use of neurofeedback. The application was developed in LabVIEW environment, using the open BCI2000 platform. The most important parts of the application are data acquisition module and EEG signal processing module implementing Fast Fourier Transform. The key element of the system is the module that, for a user-specified frequency, measures signal energy. The results are then displayed to provide the desired feedback.

13

The surface electromyography biofeedback in pain management - theoretical assumptions and possibilities of using the method

Bodera P., Stankiewicz W., Kalicki B., Kieliszek J., Sobiech J., Krawczyk A.

Przegląd Elektrotechniczny

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2012

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R. 88, nr 12b

115-116

EN

Psychophysiological assessments and biofeedback based interventions for disorders whose main symptom of interest is chronic pain can be highly effective and useful in the clinical environment. The evidence supporting the effectiveness of psychophysiological assessments and interventions for phantom limb pain, upper and lower back pain, non-cardiac chest pain, and pelvic floor pain disorders is reviewed to provide examples of how these techniques are applied to problems having differing etiologies.

PL

Zastosowanie elektromiograficznej metody biofeedback w leczeniu bólu może być bardzo przydatne w warunkach klinicznych. Dowody skuteczności metod opartych o trening funkcji psychofizjologicznych, w leczeniu bólu fantomowego, w obrębie kończyn górnych, dolnej części pleców, nie-sercowego bólu w klatce piersiowej oraz dolegliwści bólowych w obrębie miednicy mniejszej wymagają dalszych obserwacji klinicznych w celu ich szerszego zastosowania w leczenia bólu o różnej etiologii (Metoda biofeedback elektromiografii powierzchniowej w leczeniu bólu - założenia teoretyczne i możliwości zastosowania).

14

Resonant Breathing Biofeedback Training for Stress Reduction Among Manufacturing Operators

Sutarto A. P., Wahab M. N. A., Zin N. M.

International Journal of Occupational Safety and Ergonomics

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2012

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Vol. 18, No. 4

549--561

EN

The aim of this study was to examine the effect of resonant breathing biofeedback training for reducing stress among manufacturing operators. Resonant breathing biofeedback works by teaching people to recognize their involuntary heart rate variability and to control patterns of this physiological response. Thirty-six female operators from an electronic manufacturing factory were randomly assigned as the experimental group (n = 19) and the control group (n = 17). The participants of the intervention received 5 weekly sessions of biofeedback training. Physiological stress profiles and self-perceived depression, anxiety, and stress scale (DASS) were assessed at pre- and post-intervention. Results indicated that depression, anxiety, and stress significantly decreased after the training in the experimental group; they were supported by a significant increase in physiological measures. Overall, these results support the potential application of resonant biofeedback training to reduce negative emotional symptoms among industrial workers.

15

System do interaktywnej rehabilitacji oraz diagnostyki dysfunkcji kończyn dolnych w łańcuchu biokinematycznym zamkniętym

Nowak G., Kowalski P., Juszczyński Ł., Bachorz M.

Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna

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2012

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Vol. 18, nr 2

80-82

PL

Wiele jednostek chorobowych, np. złamanie, skręcenie czy zwichnięcie w obrębie kończyn dolnych wymaga odpowiednich ćwiczeń i rehabilitacji. W pracy przedstawiono system do interaktywnej rehabilitacji oraz diagnostyki dysfunkcji kończyn dolnych w łańcuchu biokinematycznym zamkniętym, opisano zasadę działania, a także korzyści wynikające z jego stosowania. System przeznaczony jest do rehabilitacji narządu ruchu w schorzeniach ortopedycznych, reumatologicznych, neurologicznych, kardiologicznych oraz w zastosowaniach do odnowy biologicznej i w sporcie.

EN

Many diseases such as fracture, sprain, or dislocation within the lower limbs require suitable training and rehabilitation. The paper presents system for interactive rehabilitation and diagnostics of dysfunction of lower limbs in the biokinematic closed chain, introduces the principle of operation and the advantages of its application. The system was designed for the rehabilitation of the motor organ in orthopedic, rheumatologic, neurologic and cardiac diseases. It is also applied in wellness and sport.

16

Projekt stanowiska laboratoryjnego do symulacji ćwiczeń rehabilitacyjnych

Zaborowska K., Andrynowska A., Klekiel T.

Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna

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2012

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Vol. 18, nr 2

124-128

PL

W pracy przedstawiono budowę stanowiska laboratoryjnego do symulacji ćwiczeń rehabilitacyjnych. Opracowano strukturę modułową urządzenia umożliwiającego niezależne wykorzystanie poszczególnych modułów. W niniejszej pracy opisane zostały funkcje poszczególnych modułów wraz z odniesieniem do realizacji wybranych ćwiczeń rehabilitacyjnych.

EN

In this paper the laboratory stand for simulation of physical rehabilitation, is presented. The modular structure of device enabling the independent operation of the individual elements, was elaborated. The functions of these modules, with reference to selected physical exercises, were described in the paper.

17

Prototypowy system akwizycji sygnałów EEG do zastosowań w interfejsach BCI

Materka A., Byczuk M.

Elektronizacja : podzespoły i zastosowania elektroniki

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2003

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Vol. 23, nr 10

12-16

PL

Przedstawiono prototypowy układ akwizycji sygnałów EEG, przeznaczony do prowadzenia badań naukowych w zakresie rozwoju metod analizy sygnału EEG do zastosowań w interfejsach BCI (brain-computer interface). Układ umożliwia cyfrową rejestrację sygnałów w ośmiu kanałach przy poziomie zakłóceń typowego pomieszczenia laboratoryjnego i jest izolowany galwanicznie od urządzeń współpracujących (np. komputera). Omówiono schemat blokowy skonstruowanego układu i obwody kompensacji zakłóceń.

EN

The aim of this work to design a multi-channel mixed-signal system for EEG signal asquisition in brain-computer interfaces. The paper contains a review of EEG signal analysis methods that are used in human-computer communication systems. Selected systems of this type are described in more detail. A prototype, single-channel sub-system architecture is characterized featuring sufficiently high noise immunity and commonmode rejection to allow EEG signal acquisition. Optical isolation is used for safe circuit operation in a typical office environment.

18

A Job Safety Program for Construction Workers Designed to Reduce the Potential for Occupational Injury Using Tool Box Training Sessions and Computer-Assisted Biofeedback Stress Management Techniques

Johnson K. A., Ruppe J.

International Journal of Occupational Safety and Ergonomics

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2002

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Vol. 8, No. 3

321--329

EN

This project was conducted with a multicultural construction company in Hawaii, USA. The job duties performed included drywall and carpentry work. The following objectives were selected for this project: (a) fire prevention training and inspection of first aid equipment; (b) blood-borne pathogen training and risk evaluation; (c) ergonomic and risk evaluation intervention program; (d) electrical safety training and inspection program; (e) slips, trips, and falls safety training; (f) stress assessment and Personal Profile System; (g) safety and health program survey; (h) improving employee relations and morale by emphasizing spirituality; and (i) computer-assisted biofeedback stress management training. Results of the project indicated that observed safety hazards, reported injuries, and levels of perceived stress were reduced for the majority of the population.