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Synthesis of differential filtering structures with complex active elements
Pánek, David ; Kubánek, David (referee) ; Langhammer, Lukáš (advisor)
This document is focused on already existing single-ended frequency filters with modern active components working in current mode and their modification into fully-differential ended form. After the modification both versions were compared between each other. The first part informs about problems concerning analogue frequency filters. The second part deals with used active components - MO-CF (Multiple Output Current Follower), BOTA (Balanced transconductance amplifier), UCC (universal current conveyor), VDTA (Voltage differencing transconductance amplifier), CDTA (Current differencing transconductance amplifier) and VDCC (voltage differencing current conveyor). Four circuits have been chosen and transformed into their differential form. Two circuits have been chosen and realised into PCB and then practicaly measured in a laboratory. The last part is a summary of simulations and measured results and check of circuits behavior result.
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Analysis of filter structures with controllable amplifiers
Pánek, David ; Langhammer, Lukáš (referee) ; Polák, Josef (advisor)
This bachelor thesis is focused on simulations and practical realizations of already existing frequency filters with modern active components in current mode. New simulation ABM model (Analog Behavioral Model) of DACA (Digital Adjustable Current Amplifier) element was used in the simulations. The first part informs about problems concerning analogue frequency filters. The second part deals with used active components - DACA (Digital Adjustable Current Amplifier), MO-CF (Multiple Output Current Follower), BOTA (Balanced transconductance amplifier) and UCC (universal current conveyor). Four circuits have been chosen and implemented into PCB (printed circuit board) on the basis of simulation results. The first circuit tunes the quality factor with help of DACA component. The second circuit tunes the natural frequency and quality factor with help of DACA components. The third and the fourth circuits are simulated and implemented in differential and also in single ended forms. These circuits tune the natural frequency with help of the same set of current amplification by DACA components. The last part is summary of simulation’s and practical measurement‘s result of this project.
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Viscerovertebral relations focusing on GERD.
Švorcová, Barbora ; Pánek, David (advisor) ; Martínek, Milan (referee)
I Abstract Title: Viscerovertebral relations focusing on GERD Objectives: The thesis is focused on describing viscerovertebral relations focusing on GERD and physiotherapeutic possibilities of using these relations to influence this disease. It is divided into two parts - theoretical and research. The aim of the theoretical part is to summarize the current knowledge about GERD and mentioned viscerovertebral relations focusing on specific technique - stimulation of the Chapman points. The aim of the research part is to present the study to assess the effect of stimulation of the Chapman points in physiotherapy of patients with GERD. Methods: The study consists of the application of a physiotherapy intervention to probands randomly divided into two groups - control and experimental. The intervention consisted of individual physiotherapy lasting approximately 45 minutes, once a week for 4 weeks, and self-therapy at home based on instructions. The therapy of both groups differed by the inclusion of the Chapman points stimulation in the experimental group. As a method of testing the effect of therapy, two standardized questionnaires were used to assess the symptoms and quality of life of patients with GERD - "GERD-HRQL" and "Relux symptom index podle Belafského ", which were presented to the probands before the...
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The effect of physiotherapeutic procedures on cervical spine surgery.
Valášková, Veronika ; Dudová, Agnieszka (advisor) ; Pánek, David (referee)
Author: Bc. Veronika Valášková Title of the work: The effect of physiotherapeutic procedures on cervical spine surgery. Aim: The aim of my thesis is to give an overview of the physiotherapy treatment after surgery of herniated cervical intervertebral disc. Methods: This thesis is written as a review of literature sources. The thesis consists of three parts, the first of which highlights the issue of kinesiology, biomechanics, stability of the cervical spine, pathophysiology of a prolapsed spinal disc and imaging issues involved in the discovery of a the actual prolapse. The second part deals with the various surgical techniques and associated complications. The final theoretical part looks into physiotherapy treatment after the operation. I examine the chronology of physiotherapy after the operation, and ascertain if there is a necessity to apply a neck brace after the surgery. It is important to answer the question of when it is possible to return to work and when the patient can return to their original physical activities. Results: The results of this thesis shows that postoperative care in individual departments vary and is inadequately described within available resources. Subsequent physiotherapy is dependent on the patient's condition before the operation, the operation itself, and its...
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Objectification of surgical treatment of carpal tunnel syndrome
Dvořáková, Marie ; Dudová, Agnieszka (advisor) ; Pánek, David (referee)
Title: Objectification of surgical treatment of carpal tunnel syndrome Objectives: The main aim of this work is to evaluate the effectiveness of surgical treatment of carpal tunnel syndrome. Methods: In this work was used a two-point discrimination test, that evaluated tactile sensory of the hand with carpal tunnel syndrome. It evaluated the change of discriminatory sensation after surgical treatment of carpal tunnel syndrome. The results of testing were evaluated by using the SigmaPlot statistic program SigmaStat 9.01 to 3.1 integration. Results: Research found that two-point discrimination in region of median nerve innervated is improved by surgical treatment of carpal tunnel syndrome, it improves the tactile sensory of the hand, which is impaired by carpal tunnel syndrome. Effect of physiotherapy on improvement of the discriminatory sensation after surgery was not demonstrated. However, the physiotherapy after surgical treatment of carpal tunnel syndrom is important. Keywords: carpal tunnel syndrome, sensory discrimination, a two-point discrimination test
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The influence of Mozart's effect on basketball shooting accuracy in professional basketball players.
Kranjčevič, Stefan ; Pánek, David (advisor) ; Pavlů, Dagmar (referee)
Title: Mozart effect on shooting accuracy of professional basketball players Aims: The aim of this thesis is to demonstrate whether the Mozart effect impacts the success rate of free throws in young premier league basketball players compared to shooting without music. Methods: As this is a pilot study, the data acquisition on this topic first started by examining the previously written text on the Mozart. The project is an experimental pilot study involving 21 probands who were randomized into three groups. The experiment is divided into 2 parts. In the first part participants are asked to shoot one hundred free throws in five blocks of twenty. In the second part, the participants are exposed to different types of acoustic stimulus during which they throw another hundred free throws. All measurements were taken after conditioning or shooting practice for the most authentic replication of the game situation. The process of the practical part was carried out in accordance with the CRISP-DM methodology, which is one of the most widely used methodologies for knowledge capture from databases (KCD). Results: The results show a borderline low correlation between shooting with and without music, according to Pearson's correlation coefficient, with a value of 0.33. The aim of using this statistical function...
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Dynamic changes in central reactivity in the context of physiotherapeutic practice
Brokešová, Justýna ; Pánek, David (advisor) ; Malá, Jitka (referee)
Title: Dynamic changes in central reactivity in the context of physiotherapeutic practice Objectives: The aim of this diploma thesis is to obtain, elaborate and summarize current knowledge regarding the phenomenon of central sensitization from both Czech and for- eign literature. The main focus is on physiotherapeutic practice in the context of diagnos- tic and therapeutical methods and their application in clinical practice. Methods: This thesis is written in the form of literature review. All the studies were ob- tained from following scientific databases: PubMed, Web of Science and ScienceDirect. To accept a study into review, it had to be focused on either a diagnostic or therapeutic approach targeting central sensitization in chronic pain. From the databases mentioned above, 1032 different studies were obtained. After applying all the defined exclusion cri- teria, only 34 were left and included in the review. 21 of them were focused on evaluation methods, the topic of the rest 13 was therapeutic. Results: The most common diagnostic methods to evaluate central sensitization are CSI and QST. It was not possible to determine the optimal method due to differences between studies and heterogeneity in the central sensitivity syndrome as well. As for therapeutic approach, the most frequent was manual...
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Influence of binaural beats on ideomotoric coordination
Pavlovič, Ondřej ; Pánek, David (advisor) ; Pavlů, Dagmar (referee)
Name: The effects of binaural beats on sleep quality: a systematic review Aims of the study: The main objective of this study is to present the possibilities of influencing stress and sleep, to determine the effect of binaural beats (BB) stimulation on sleep quality and parameters, and to determine the specifics of effective BB therapy based on the available data. Materials and methods: This systematic review includes scientific articles and clinical studies published in relevant and/or peer-reviewed journals and conference proceedings. Three electronic databases (Web of Science, Scopus, PubMed) were searched for all available sources published from 2000 to January 2023 in English language. The search was conducted using relevant keywords and their combinations. The screening and subsequent process of elimination was based on set of eligibility and inclusion criteria. Results: Total of fourteen studies met the eligibility criteria. BB stimulation increased subjectively perceived sleep quality and reduced mental tension. Objectively, it reduces time of falling asleep, accelerates the onset of deeper sleep stages (N2 and N3) and increases their duration, as well as the total sleep time. The parameters optimal for effective BB stimulation can be laid out as follows: BB in the frequency range of 2 to 4...
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Electric brain acticity changes during targeted emotional stimulation evaluated using sLORETA method
Špidlenová, Lada ; Pánek, David (advisor) ; Pavlů, Dagmar (referee)
Name: Electrical cerebral activity changes during targeted emotional stimulation, evaluated by sLORETA Goals: The main goal of this thesis is the comparison of electrical brain activity changes during targeted emotional stimulation. Method: The research was conducted by measuring electrical cerebral activity using Natus Neurology 32-channel Nicolet™EEG Wireless Amplifier 32/64 device. The activity measurements were taken by an EEG Electro-cap with a total of 19 flat registration electrodes (Fp1, Fp2, F7, F3, Fz, F8, T5, T3, C3, Cz, C4, T4, T6, P3, Pz, 36 P4, O1, O2), placed in accord with the internationally used 10-20 system. The impendance resistance did not exceed 10 kΩ, with a sampling frequency of 512 Hz and a bandpass of 0,5-70 Hz. Resulting data was then processed using NeuroGuide programme. A 30s long, zero-artifact EEG section was then chosen to be exported to sLORETA programme. Probands were divided randomly into three research groups - positive, neutral and negative. Each proband was asked to pass the VVIQ imagination vividity questionnaire. In the next phase, each participant was asked to undergo a three week long imagination training programme, consisting of watching VR videos and targeted imaginations of walking, three times a week. While in the VR simulation, music and sound effect...
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Brain Activity Evaluation Using sLORETA Imaging During Imagination and Induction of Flow State.
Remešová, Alžběta ; Pánek, David (advisor) ; Pavlů, Dagmar (referee)
Name: Brain Activity Evaluation Using sLORETA Imaging During Imagination and Induction of Flow State The aim of the study: The aim of this work was to use sLORETA imaging to capture changes in the source brain activity before and after a 3-week movement imagination training. With the help of subjective questionnaires, the second goal was to capture and compare the potential progress of the flow state also within the imagination training. Methods: 13 healthy probands in the age range of 20-30 years participated in the study. Brain source activity was measured using a surface telemetric 32-channel EEG device Nicolet TM EEG Wireless Amplifier 32/64 from Natus Neurology. The subjects underwent EEG measurements twice, always before the start of the imagination training and after its end. Measurements were performed identically in the following order: 1) resting EEG: 5 min eyes closed, 5 min eyes open; 2) watching video in VR: 3 min + 5 min pause; 3) imagination of movement: 3 min. The initial measurement was followed by a 3-week home movement imagination training with detailed instructions using VR glasses. The subjects were told to watch the video and then train their own imagination 9 times in total. After the initial and control measurements, the probands were asked to fill out the Flow State Scale...
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