EEG Activity during Realization of Manual Movements by Individuals with Different Characteristics of the Alpha Rhythm

Morenko, Alevtyna

doi:10.1007/s11062-017-9643-9

Cited by 3 publications

(14 citation statements)

References 19 publications

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“…According to the available results, examinees with initially high EEG α-rhythm modal frequency had higher levels of selective attention and more local changes in electrical activity of the cerebral cortex during the regulation of MM. People with a low α-frequency were characterized by less specific and differentiated cortical activation processes [20,21,23]. The functional differences previously identified in men during their performance of MMs by the subdominant hand [22] may reflect a generally relatively lower tone of cortical activation in men with a low IαF that can be specifically compensated for by increased "intensity" and an observed redundancy of brain processes.…”

Section: Introductionmentioning

confidence: 86%

“…The nature of responses in the survey and execution of the motor and psychoacoustic tests were determined. The individual profiles of the manual motor asymmetry as well as auditory asymmetry were counted for each woman (K skew) (Formula 1) [20][21][22][23][24].…”

Section: Psychophysiological Examinationmentioning

confidence: 99%

“…Finger movements were consisted of flexion or extension. Each finger was flexed or extended by the examinees in response to a sound [20][21][22][23]. The electronic version of the drum battle (Finale 2006 software) was used for this purpose.…”

Section: Eeg Testing Proceduresmentioning

confidence: 99%

“…Taking into account the exceptional importance of the results obtained by various scientists, we have to note some insufficiency of such information to fully understand how the modal frequency of the EEG α-rhythm can be related to the control of the activity of the distal muscles of the hand. Previous studies [20,21,23] showed the brain processes' features during execution of manual movements in men with different modal frequency of EEG alpha rhythm. According to the available results, examinees with initially high EEG α-rhythm modal frequency had higher levels of selective attention and more local changes in electrical activity of the cerebral cortex during the regulation of MM.…”

Section: Introductionmentioning

confidence: 99%

“…Kristeva et al [12] noted that an increment of the EEG α-amplitude and a decrease of the integral power of the facial muscle electromyogram can be considered as an increase of the ability to self-control movement. It should be emphasized that the modal α-frequency of EEG is often considered [13][14][15][16][17][18] as a sign that reflects important innate features of the structural organization of thalamic and cortical neurons, in particular, the features of ionic processes in these cells [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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Changes in Electroencephalogram (Eeg) Power During Subdominant (Left) Hand Finger Movements in Females With Different Alpha Rhythm Characteristics

Morenko¹,

Morenko²,

Dmytrotsa³

et al. 2020

hpc

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Authors' contribution Wkład autorów: A. Study design/planning zaplanowanie badań B. Data collection/entry zebranie danych C. Data analysis/statistics dane-analiza i statystyki D. Data interpretation interpretacja danych E. Preparation of manuscript przygotowanie artykułu F. Literature analysis/search wyszukiwanie i analiza literatury G. Funds collection zebranie funduszy Summary Background. This study investigates the indicators of electroencephalographic (EEG) oscillatory activity and processes that are correlated with manual movements executed by the subdominant (left) hand in women with a high or a low individual α-frequency. Material and methods. 113 healthy right-handed women from the ages of 19 to 21 were divided randomly into two experimental groups with high (n = 59, IαF > 10.25 Hz) and low (n = 54, IαF ≤ 10.25 Hz) individual EEG α-frequency (IαF). EEG power during flexion or extension of the subdominant hand fingers was evaluated. Results. Manual movements performed by women, especially those exhibiting high modal α-frequency, were accompanied by reduced α and β power in mid and posterior cortical areas. These changes occurred in combination with a local power increase in α1-oscillations in the frontal leads. A local increase of α3-activity in the frontal cortex areas was also revealed in women with low IαF. In this same group of women, generalized increases in EEG power of θ-, β-and γ-oscillations were observed in the cortex. Conclusions. These results revealed a greater redundancy of brain processes in women with low IαF power compared to women with high α-frequency.

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Section: Introductionmentioning

confidence: 86%

Section: Psychophysiological Examinationmentioning

confidence: 99%

Section: Eeg Testing Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Changes in Electroencephalogram (Eeg) Power During Subdominant (Left) Hand Finger Movements in Females With Different Alpha Rhythm Characteristics

Morenko¹,

Morenko²,

Dmytrotsa³

et al. 2020

hpc

View full text Add to dashboard Cite

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Low Back Pain Assessment Based on Alpha Oscillation Changes in Spontaneous Electroencephalogram (EEG)

Feng

Cui

et al. 2021

Neural Plasticity

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Objectively and accurately assessing pain in clinical settings is challenging. Previous studies showed that alpha oscillations of electroencephalogram data are correlated with subjective perceived pain. Based on this finding, this study is aimed at assessing chronic low back pain based on alpha oscillations. Multichannel electroencephalogram data were recorded from 27 subjects with chronic low back pain under the simple conditions of closing eyes or opening eyes. Spectral analyses were conducted to extract the alpha band responses, and the alpha powers were calculated for the two conditions, respectively. Normalized alpha power was calculated by subtracting the alpha power in the eyes-open condition from that in the eyes-closed condition. The correlation between the alpha power and the subjective pain intensity was evaluated in frontal, central, and posterior regions. The normalized alpha power in the central region was negatively correlated with the subjective pain intensity ( R = − 0.50 , P = 0.01 ), with the strongest correlation occurring at the Cz electrode ( R = − 0.59 , P = 0.04 ). The correlation analysis results demonstrated the possibility of using the differences of alpha spectral power between eyes-closed and eyes-open conditions as a measure for assessing chronic low back pain. The findings suggest that the normalized alpha power in the central region may be used as a measurable and quantitative indicator of chronic pain for clinical applications.

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Event-related potentials during contralateral switching over motor programs in humans

Korzhyk

Dmutrotsa

Poruchynskyi

et al. 2020

Regul. Mech. Biosyst.

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The study of processes related to the motor response suppression and the evaluation of the next, alternative, response after termination of the already observed initial motor response is of significant interest to modern scientists. The objective of our research is to identify the gender-specific features of the amplitude-time characteristics of induced cortical electrical activity in the process of the excitation of the motor programs of manual movement. Healthy and right-handed men and women aged 18–23 participated in the research. The research tasks investigated the time of simple and complex visual-motor responses, amplitude-temporal features of N2 and P3 components of cognitive evoked potentials in the response to launch and contralateral switching (dominant or subdominant arm) of the motor program of finger flexes (pressing the remote control button) in the Stop-Change paradigm. Event-related potentials (ERPs) were analyzed in the frontal, central, and parietal lobes of the cortex. It was established that male participants had lower time indexes of simple and complex visual-motor responses than women. In addition, during the contralateral switching of motor programs of manual movements the smaller latent periods of the ERPs components in the right central and left frontal sections (component N2), in the left hemisphere lobes (component P3) among men were observed. The amplitudes of the N2 and P3 components revealed higher values in male participants at the parietal lobes. Thus, the process of recognizing and differentiating the stimulus among men was faster, with more powerful focus and attention on the operative memory. In the left hemisphere of men and women the smaller latent periods of P3component (in the central lobe) and amplitudes of N2 and P3 components were determined compared to the right hemisphere. Thus, the motor programs switching in the paradigm of the experiment occurred with the sequential activation of the left and contralateral right hemispheres.

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EEG Activity during Realization of Manual Movements by Individuals with Different Characteristics of the Alpha Rhythm

Cited by 3 publications

References 19 publications

Changes in Electroencephalogram (Eeg) Power During Subdominant (Left) Hand Finger Movements in Females With Different Alpha Rhythm Characteristics

Changes in Electroencephalogram (Eeg) Power During Subdominant (Left) Hand Finger Movements in Females With Different Alpha Rhythm Characteristics

Low Back Pain Assessment Based on Alpha Oscillation Changes in Spontaneous Electroencephalogram (EEG)

Event-related potentials during contralateral switching over motor programs in humans

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