Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 4

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Brain bioelectrical activity stimulated by neurofeedback EEG static training in experiencing the state of readiness for sport activity

100%
Mikicin M., Kowalczyk M.
Acta Neurobiologiae Experimentalis
|
2012
|
tom 72
|
nr 2
The authors attempted to assess the brain activity in athletes and the related mental states. The study was based on a Neurofeedback EEG (NEEG) static training with respect to what is termed the state of readiness for sport activity. The QEEG method (mapping, EEG) was used to analyse changes in brain bioelectrical action potential which remain in close temporal relation to particular events e.g. relax, concentration. The participants were athletes. In addition to sport training, the subjects (25 people) participated in 20 NEEG static training sessions aided with audiovisual brain stimulation (alpha). The results obtained for individual brain areas before and after 20 static training sessions showed that the activity of neurones was elevated in the visual and auditory areas, whereas it decreased in the motor area, and, what is worth emphasizing, the alpha activity was rising in general. Neurone activity in other brain areas was at similar levels before and after training sessions. Conclusion: NEEG static training excites bioelectrical activity of the brain in the area involved in perception from the stimulated senses, silences the non-involved areas and intensifies the state of relax (alpha). We find this training useful as a particular form of stimulation and control of mind, both in sport and in other domains of life. Research Project (Grant) PB – 76 MNiSW.
2

Neurofeedback needs support! Effects of neurofeedback-EEG training in terms of the level of attention and arousal control in sports shooters

81%
Mikicin M., Szczypinska M., Skwarek K.
Baltic Journal of Health and Physical Activity. The Journal of Gdansk University of Physical Education and Sport
|
2018
|
tom 10
|
nr 3
Background: ‪Achievements in sports shooting are associated with the level of attention and agitation control, which improve to a significant extent the effectiveness of shooters in sports competition. The purpose of this study was to analyse changes in the level of attention and activation in sports shooters after neurofeedback-EEG training. Material and methods: ‪The study included students of the Military University of Technology (27 subjects). The Vienna Test System was used: a test for assessing attention (COG) and a test for assessing the functional activation (FLIM). The measurements were carried out before and after 20 neurofeedback-EEG training sessions oriented towards strengthening the beta frequency (12-22 Hz). To reduce any non-specific effects, investigators were informed not to motivate the subjects. All sessions consisted of 10 rounds. Results: T‪he differences between the first and the second measurement show that the shooters included in the study improved their abilities in terms of the attention level. The subjects performed the task more quickly and accurately during the second measurement. No significant changes were observed in terms of the arousal level. Conclusions: ‪Neurofeedback-EEG training improved the level of attention in shooters but it had no effect on the optimal arousal level in shooters.
3

Brain-training for physical performance: a study of EEG-neurofeedback and alpha relaxation training in athletes

61%
Mikicin M., Orzechowski G., Jurewicz K., Paluch K., Kowalczyk M., Wrobel A.
Acta Neurobiologiae Experimentalis
|
2015
|
tom 75
|
nr 4
In recent years, EEG-neurofeedback training (EEG-NFB) has been increasingly used to optimize various brain functions. Better performance in various activities was also reported after relaxation trainings, another popular method in therapeutic practice. Both these methods are used as a part of professional coaching in sports training centers. In the present study, we aimed to evaluate the impact of such holistic training on physiological (EEG) and behavioral measures on semi-professional athletes. EEG-NFB paradigm was intended for amplification of the amplitudes of SMR (12–15 Hz) and beta1 (13–20 Hz) bands and simultaneous reduction of the amplitude of theta (4–7.5 Hz) and beta2 (20–30 Hz). Participation in NFB sessions was accompanied with self-administration of relaxing, audio-visual stimulation after each daily athletic training session. The training program resulted in the increase of alpha and beta1 power of trained participants when assessed in rest with eyes-closed. In eyes – open state, participants of the trained group maintained the same level in all frequency bands, in opposite to the control subjects, whose power decreased in the second measurement in beta1 band when compared to the first one. The trained group exhibited greater reduction of reaction times in a test of visual attention than the control group and showed improvement in several performance measures of Kraepelin’s work-curve, used to evaluate speed, effectiveness and work accuracy. Together, these results present initial support for the use of holistic, neurophysiological training in sports workout.
4

Muscle activity can fake the effect of high-frequency EEG-neurofeedback

61%
Jurewicz K., Paluch K., Rogala J., Mikicin M., Krauz R., Kublik E., Wrobel A.
Acta Neurobiologiae Experimentalis
|
2015
|
tom 75
|
nr Supl.
AIM: EEG-based neurofeedback trainings (EEG-NFB) belongs to a broader category of biofeedback techniques aimed to alter various physiological parameters such as heart rate (ECG-feedback), muscle tension (EMG-feedback) etc., with help of continuous feedback provided in a form of sensory information about the current value of a particular parameter. During EEG-NFB training EEG is recorded and the power of chosen frequency bands is fed back to a trainee in a form of sensory information. The trainings are founded on the assumption that one can learn to change the content of his/her EEG spectrum. In our experiment we aimed to verify the effectiveness of such training and study its mechanisms. METHODS: We chose to train healthy young participants to voluntarily up-regulate (n=6) and down-regulate (n=6) their beta band (15–22 Hz) amplitude recorded from the scalp electrodes placed at frontal and parietal positions (F3, F4, P3, P4) during visually guided monitor-play. As a control we used sham group (n=7), which feedback signal wasn’t related to recorded EEG but generated by the algorithm. RESULTS: We found that NFB training directed to this frequency band was inefficient – we did not observe any modification of the EEG beta band amplitudes neither within nor across the sessions of EEG-NFB. Instead, we observed training-induced increase of highfrequency activity of muscle origin (recorded by the same EEG electrodes) in three participants from group trained to up-regulate beta. CONCLUSIONS: In these cases EMG-driven effects were perceived as the true positive effect of EEG-NFB by trainers and trainees. Importantly, if the data were analyzed and presented according to the standards prevailing in the current EEG-NFB literature, the result of the study could be presented as positive, i.e. up-regulation of the beta band would be claimed successful. Supported by the Polish National Science Centre grant 2012/07/B/ NZ7.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.