- Tytuł:
- Features of the cortical activity of men having a high or low alpha-frequency background of the eeg while performing alternate finger movements
- Autorzy:
-
Morenko, A.
Tsos, A.
Kotsan, I. - Powiązania:
- https://bibliotekanauki.pl/articles/2052222.pdf
- Data publikacji:
- 2014
- Wydawca:
- Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
- Tematy:
-
power
coherency
electroencephalogram
individual alpha-frequency
alternate movements by fingers - Opis:
- The purpose of this paper is to identify the cerebral electrical activity features in men with a high or low α-frequency background while performing the alternate finger movements. A test group consisting of 104 healthy men from the ages of 19 to 21 was divided into two groups according to the magnitude of their individual α- frequency (ІАF) median –groups with high (n = 53, IAF ≥10,04 Hz) and low (n = 51, IAF ≤10,03 Hz) levels of ІАF. Changes in power and the coherence of the EEG oscillations during the alternate finger movements as well as intergroup differences were evaluated. Men with high a IAF are distinguished by higher rates of speed and accuracy in terms of their sensory-motor response. The role of inhibitory neural processes increases in the case of men whose frequencies are low. The implementation of alternating finger movements in male groups is accompanied by a decrease in the coherence of θ-, α1-, α3- EEG oscillations in the cortex in general, β- and γ-activity - in the rear temporal and occipital areas. In the frontal and central lobes of α2-, β- and γ- ranges an increase in EEG coherence fuctuations was observed. The power of θ-, α- and β1- waves, especially in the posterior cortex areas, decreases. A larger degree of low-frequency fuctuations in EEG power can be observed in the frontal area. Thus, more economical brain processes providing the processing of any sensory or motor information in men with a high IAF determine higher levels of the speed and accuracy of their sensorimotor responses. Men with a low IAF have lower ductility but a higher voltage of brain processes correlated with a decrease in the sensorimotor response of speed capabilities increasing the role of inhibitory effects.
- Źródło:
-
Health Problems of Civilization; 2014, 08, 1; 24-31
2353-6942
2354-0265 - Pojawia się w:
- Health Problems of Civilization
- Dostawca treści:
- Biblioteka Nauki
Artykuł