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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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Changes of intracerebral activity during stimulation of the chest trigger zone according to the Vojta principle
Martínek, Milan ; Pavlů, Dagmar (advisor) ; Angerová, Yvona (referee) ; Řasová, Kamila (referee)
Title: Changes of intracerebral activity during stimulation of the chest trigger zone according to the Vojta principle Objective: The aim of this study is to examine whether stimulation of the chest trigger zone according to the Vojta principle results in changes of the brain electrical activity in the primary and secondary motor cortical areas evaluated in the sLORETA program. Methods: Seventeen healthy women aged 20-30 (25 ± 6.4) were involved in the experiment. Registration of the scalp EEG was performed with a special EEG cap. EEG was measured in all individuals with eyes closed in order to reduce ocular artifacts and to reduce visual afferentation. EEG activity was registered for 5 min at rest (PRE CE) prior to the actual reflex locomotion stimulation. Subsequently, the electrical activity was followed for 15 min during chest trigger zone stimulation (VOJTA CE). The experiment was terminated with the registration of the resting EEG recording until 5 min after the reflex locomotion stimulation of the trigger zone (POST CE). The obtained data were then statistically compared in the sLORETA program using a pairwise t-test with logarithmic transformation of the aliasing parameter 0,5 with permutation method using 5000 randomizations at the significance level p ≤ 0,05 with correlation for repeated...
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Brain Source Activity Changes During the Visual Training of the Imagination Viewed by sLORETA Imaging
Englerová, Barbora ; Pánek, David (advisor) ; Pavlů, Dagmar (referee)
Title: Brain Source Activity Changes During the Visual Training of the Imagination Viewed by sLORETA Imaging. Objectives: The research study aims to determine which changes in brain source activity occur before and after an intervention in the form of a three-week visual training of motor imagery. The electrical activity of the brain was recorded using scalp EEG and transferred to the sLORETA program, in which the source brain activity was evaluated. Methods: The research was concluded on 13 healthy subjects aged between 20-30 years. The Czech standardized version of The Vividness of Movement Imagery Questionnaire - 2 (VMIQ - 2) was used for the survey. The electrical activity of the brain was recorded using a scalp EEG Nicolet TM EEG Wireless Amplifier 32/64 by Natus Neurology. The research consisted of initial and control measurements, the measurement included several phases. First, an initial measurement took place, which always included measurements of resting EEG (5minutes eyes open and 5 minutes eyes closed), action observation in VR (3 minutes) and subsequent measurement of the motor imagery with eyes open (3 minutes). Between the individual measurements, there was a three-week visual training of motor imagery, which included action observation in VR and the individual motor imagery three...
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Changes in brain activity in tactile stimulus therapy and Ruka Ruk therapy compared to mirror therapy in upper limb rehabilitation.
Pilátová, Kateřina ; Pánek, David (advisor) ; Pavlů, Dagmar (referee)
Title: Changes in brain activity in tactile stimulus therapy and Ruka Ruk therapy compared to mirror therapy in upper limb rehabilitation Objectives: The aim of the research project is to determine the changes in source electrical activity in sLORETA imaging using virtual reality operating on the principle of mirror therapy in the Ruka Ruk program and in conventional mirror therapy with tactile and haptic upper limb stimulation, compared to the resting state with open eyes. Methods: 12 healthy volunteers aged 23-42 participated in the experiment. The electrical activity of the brain was measured by scalp EEG in 7 phases of the experiment. Brain activity was measured at rest, during therapy with a sagittally placed mirror reflecting the movement of the right upper limb, and during therapy with a Leap motion sensor and a monitor with Ruka Ruk software, where participants saw only virtual upper limbs. The software mirrored the movement of the right upper limb on both virtual limbs. The electrical activity of the brain was sensed in three modifications in both types of therapy with the addition of a haptic or tactile left upper limb stimulus with a 10 cm wide foam cylinder. The order of modifications was randomized. The EEG record was processed and statistically evaluated in the sLORETA program, for...
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Source analysis and comparation of Feldenkrais inspired movement and visual stimulation using sLORETA
Novotná, Tereza ; Pánek, David (advisor) ; Pavlů, Dagmar (referee)
Title of thesis: Source analysis and comparation of Feldenkrais inspired movement and visual stimulation using sLORETA Objectives: The thesis aim is to evaluate intracerebral source activity during a simple arm movement inspired by Feldenkrais method and to compare it with a visual stimulation of the same movement presented in a clip and with an imagination of the same movement. The movement inspired by Feldenkrais method was simplified to a repeated flexion of the dominant arm. Source analysis was evaluated from EEG and processed using sLORETA program, Methods: To obtain the data, experimental group was put together containing 12 participants aged 22-60, (mean = 27.2), both genders included. Participants were subjected to one-off measurement by the EEG instrument. Feldenkrais inspired movement of a flexion of a dominant upper right arm was investigated. The experiment constisted of six parts: 1. native EEG record with eyes closed and open, 2. active flexion of the dominant upper arm with eyes closed, 3. active flexion of the dominant upper arm with eyes opened, 4. watching video presenting repeated upper arm flexion, 5. dominant upper arm flexion imagination with eyes closed. Every part lasted for two minutes. Between individuals parts was inserted a pause. Obtained EEG data were processed with...
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Measuring electrical brain activity during stimulation of trigger zones from concept of Vojta principle
Martínek, Milan ; Pánek, David (advisor) ; Pavlů, Dagmar (referee)
Title: Measuring electrical brain activity during stimulation of trigger zones from concept of Vojta principle Objectives: The aim of this study is to clarify whether there is a change in the electrical brain activity evaluated by the sLORETA program during the stimulation of trigger zones according to the Vojta concept. The source activity during stimulation of trigger zones was scanned from the scalp EEG and compared with the sLORETA program with the source activity measured at rest, before and after the stimulation of the trigger zones. Methods: The research was conducted on 11 healthy adult subjects. The entire research group is consisted of women aged in range 19-32. The data was obtained from the scalp EEG before, during and after stimulation of trigger zones according to Vojta concept. For each proband the measurement of resting EEG with both open and closed eyes (2 x 10 minutes) was first performed, then the measurements were taken during the stimulation of trigger zones with open and closed eyes (2 x 15 minutes). Finally, a resting EEG was measured, alternating open and closed eyes after five minutes (4 x 5 minutes). There was a pause of at least 15 minutes between each stimulation of trigger zones. The order of open and closed eyes during resting EEG and during stimulation of trigger...
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Cerebral projection of haptic contact via sLORETA imaging
Dubová, Dita ; Pánek, David (advisor) ; Pavlů, Dagmar (referee)
Title: Cerebral projection of haptic contact via sLORETA imaging Objectives: The aim of this work is to evaluate changes in intracerebral source activity via sLORETA imaging during haptic stimulation of hands, while this contact is modified by a mirror illusion in comparison to calm state with open eyes. The work seeks to specify localization of such activity. Methods: Ten healthy volunteers aged 23-42 participated in the experiment. The electrical brain activity was detected with scalp EEG. The experiment was divided in 5 phases. First we measured the brain activity during calm state with open and with closed eyes, each for 5 minutes. Afterwards the subjects were seated at a table with a mirror occluding their right hand and reflecting their left hand. The brain activity was than recorded during 4 modifications of the experiment in duration of 2 minutes each. The first modification contained symmetrical haptic contact on both hands, modification 2 involved stimulation on the left hand only, during modification 3 the stimulus was applied on the right hand only and modification 4 had no tactile stimulus on neither side. The order of modifications for each individual was randomized. The EEG data were converted into sLORETA program, which allows to localize the source of the recorded brain activity...
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Changes in central reactibility during thermal stimulation monitored by electromagnetic tomography (sLORETA)
Richtrová, Eva ; Pánek, David (advisor) ; Nováková, Tereza (referee)
Title: Changes in central reactivity during thermal stimulation monitored by electromagnetic tomography (sLORETA) Objectives: The objective of this thesis is to determine whether there are any changes in central reactivity during local thermal stimulation by heat and cold and to compare the effect of analgesic electrical stimulation by TENS (Transcutaneous Electrical Nerve Stimulation) applied after single thermal stimuli. The brain activity was scanned from the scalp EEG and the results were evaluated by using sLORETA program. Methods: Twelve young, healthy people over the age of 21 participated in this study. The requirement for the participation in this experiment was good health condition without any neurological or other diagnoses. The electrical activity of the brain was being recorded throughout the whole experiment using a 32-channel EEG cap. The measurement had multiple parts. During the whole experiment, the participants were lying on the therapeutic table and all stimuli were applied locally to the right hand. Firstly, the EEG was recorded while participants were resting with closed eyes for five minutes. Then we realized a measurement of a two-minute long application of electrical stimulation of TENS in above-threshold sensitive intensity, which was individual for each participant. The...
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EEG analysis of gait on an unstable surface
Hons, Pavel ; Pánek, David (advisor) ; Pavlů, Dagmar (referee)
1 Abstract Title: EEG analysis of gait on an unstable surface Objectives: The aim of the thesis was comparison of changes of electrical activity of intercerebral brain structures using the programme sLORETA between 1) the state of rest and walk on slackline, 2) the state of rest and walk on groundline and 3) between the state of rest and projection of first-person virtual reality of walking on slackline; to find out which intracerebral areas are activated during these activities. Methods: 10 healthy participants took part in the test, 6 males and 4 females, between 18 and 30 years of age, 24 years of age on average. The experiment consisted of EEG gauging at rest with open/closed eyes (5 minutes each) and three other consequent parts in random order: 1. walk on slackline (2 minutes), 2. walk on groundline imitating walk on slackline (2 minutes), 3. watching a video with the first-person virtual reality projection of walking on slackline in basic position (2 minutes). During the whole experiment the brain activity was monitored and recorded by Wireless EEG Nicolet, EEG hat Waveguard Connect with 19 electrodes was used for collecting data by scalp EEG. The record was consequently assessed by sLORETA programme which created projection of active brain parts in 3D Talairach atlas. Results: Statistically...
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Prolonged apnea: monitoring brain activity in freedivers
Skopalová, Pavla ; Pánek, David (advisor) ; Nováková, Tereza (referee)
Title: Prolonged apnea: monitoring brain activity in freedivers Objectives: The aim of this study is to monitor the brain electrical activity during the prolonged apnea in freedivers. Prolonged apnea in the water and prolonged dry apnea were compared to each other and also to a resting state before the apnea, all states with the eyes closed. Brain activity was obtained from the scalp EEG and evaluated using the sLORETA program. Methods: The research was conducted in 11 healthy men at the age of 23 - 51. The data was obtained from the scalp EEG. The record was first taken at a resting state before the apneas with eyes closed, then at maximum prolonged dry apnea with eyes closed and finally at maximum prolonged apnea in the water with eyes closed. The lenghts of the prolonged apneas ranged from 2:15 minutes to 5:30 minutes in idividual probands. There were pauses of at least three minutes between each apnea as by the proband's needs. The compared pair groups were following: prolonged apnea in the water against prolonged dry apnea, prolonged apnea in the water against resting state before the apnea and finally prolonged dry apnea against resting state before the apnea, all with the eyes closed. Selected sections of EEG record without artefacts were processed by sLORETA program. In the statistical...
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