EEG coherence changes between right and left motor cortical areas during voluntary muscular contraction

Abdul-latif, A. A.; Ćosić, Irena; Kumar, Dinesh; Polus, Barbara; Pah, Nemuel Daniel; Djuwari, D.

doi:10.1007/bf03178882

Cited by 8 publications

(6 citation statements)

References 14 publications

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“…Our findings that EEG-EEG coherence decreased during bilateral compared with unilateral force at 40% and 70% of MVC in the alpha but not the beta frequency band agree with evidence suggesting that interhemispheric interactions at these frequency bands serve distinct functions ( Brinkman et al 2014 ) and are related to separate functional networks ( Hari and Salmelin 1997 ). This also agrees with previous studies showing that coherence between sensorimotor cortices in the alpha band is sensitive to detect changes during strong levels of force generation ( Abdul-latif et al 2004 ; Svoboda et al 2002 ). The decrease in coherence in the alpha but not the beta band might be related to a lesser synchronization between motor cortical networks during strong voluntary contractions ( Kristeva et al 2007 ; Perez et al 2012 ).…”

Section: Discussionsupporting

confidence: 93%

“…EEG-EEG coherence between sensorimotor cortices in the alpha frequency band and the iSP have been associated with the size and integrity of the corpus callosum ( Meyer et al 1995 ; Okumura et al 2013 ; Stancak et al 2002 ; Teipel et al 2009 ). Also, studies showed that oscillations between sensorimotor cortices in the alpha frequency band ( Abdul-latif et al 2004 ; Svoboda et al 2002 ) and the iSP ( Fling and Seidler 2012 ; Soteropoulos and Perez 2011 ) are sensitive to detect changes during strong levels of force generation. Thus we hypothesized that increasing levels of bilateral isometric forces will change interhemispheric EEG-EEG coherence in the alpha frequency band in association with the iSP.…”

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confidence: 99%

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Interhemispheric connectivity during bimanual isometric force generation

Long

Tazoe

Soteropoulos

et al. 2016

Journal of Neurophysiology

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Interhemispheric interactions through the corpus callosum play an important role in the control of bimanual forces. However, the extent to which physiological connections between primary motor cortices are modulated during increasing levels of bimanual force generation in intact humans remains poorly understood. Here we studied coherence between electroencephalographic (EEG) signals and the ipsilateral cortical silent period (iSP), two well-known measures of interhemispheric connectivity between motor cortices, during unilateral and bilateral 10%, 40%, and 70% of maximal isometric voluntary contraction (MVC) into index finger abduction. We found that EEG-EEG coherence in the alpha frequency band decreased while the iSP area increased during bilateral compared with unilateral 40% and 70% but not 10% of MVC. Decreases in coherence in the alpha frequency band correlated with increases in the iSP area, and subjects who showed this inverse relation were able to maintain more steady bilateral muscle contractions. To further examine the relationship between the iSP and coherence we electrically stimulated the ulnar nerve at the wrist at the alpha frequency. Electrical stimulation increased coherence in the alpha frequency band and decreased the iSP area during bilateral 70% of MVC. Altogether, our findings demonstrate an inverse relation between alpha oscillations and the iSP during strong levels of bimanual force generation. We suggest that interactions between neural pathways mediating alpha oscillatory activity and transcallosal inhibition between motor cortices might contribute to the steadiness of strong bilateral isometric muscle contractions in intact humans.

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Section: Discussionsupporting

confidence: 93%

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confidence: 99%

Interhemispheric connectivity during bimanual isometric force generation

Long

Tazoe

Soteropoulos

et al. 2016

Journal of Neurophysiology

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“…When participants were required to apply 70% of their maximum voluntary contraction (MVC) in an isometric grasping task, the EEG and EMG data indicated that the electro-cortical and movement potentials increased with muscle fatigue (Johnston et al, 2001). However, coherence values decreased with the application of 50% MVC (Abdul-Latif et al, 2004). Another study using only 20% MVC in the isometric gripping task demonstrated that cortical activity increased in the preparation phase, peaked during onset, and then decreased thereafter (Yang et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Neuroergonomics Applications of Electroencephalography in Physical Activities: A Systematic Review

Rahman

Karwowski

Fąfrowicz

et al. 2019

Front. Hum. Neurosci.

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Recent years have seen increased interest in neuroergonomics, which investigates the brain activities of people engaged in diverse physical and cognitive activities at work and in everyday life. The present work extends upon prior assessments of the state of this art. However, here we narrow our focus specifically to studies that use electroencephalography (EEG) to measure brain activity, correlates, and effects during physical activity. The review uses systematically selected, openly published works derived from a guided search through peer-reviewed journals and conference proceedings. Identified studies were then categorized by the type of physical activity and evaluated considering methodological and chronological aspects via statistical and content-based analyses. From the identified works ( n = 110), a specific number ( n = 38) focused on less mobile muscular activities, while an additional group ( n = 22) featured both physical and cognitive tasks. The remainder ( n = 50) investigated various physical exercises and sporting activities and thus were here identified as a miscellaneous grouping. Most of the physical activities were isometric exertions, moving parts of upper and lower limbs, or walking and cycling. These primary categories were sub-categorized based on movement patterns, the use of the event-related potentials (ERP) technique, the use of recording methods along with EEG and considering mental effects. Further information on subjects' gender, EEG recording devices, data processing, and artifact correction methods and citations was extracted. Due to the heterogeneous nature of the findings from various studies, statistical analyses were not performed. These were thus included in a descriptive fashion. Finally, contemporary research gaps were pointed out, and future research prospects to address those gaps were discussed.

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“…In this study, unilateral isometric contraction -Latif, et al, 2004). Previous studies showed that the EEG-EEG coherence and EEG spectral power decreased during bilateral activity as compare with unilateral force in alpha band (Long, et al, 2016).…”

Section: Effects Of the Level Of Isometric Contraction On Neural Actimentioning

confidence: 55%

Effect of Visual Feedback on Behavioral Control and Functional Activity During Bilateral Hand Movement

Guo

Yang

et al. 2020

Preprint

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Background: Previous researches state vision as vital source of information for movement control and more precisely for accurate hand movement. Further, fine bimanual motor activity may be associated to various oscillatory activities within distinct brain areas and inter-hemispheric interactions. However, neural coordination among the distinct brain areas responsible to enhance motor accuracy is still not adequate.Methods: In the current study we investigated task-dependent modulation by simultaneously measuring high time resolution electroencephalogram (EEG), electromyogram (EMG) and force along with bi-maual and uni-manual motor tasks. The errors were controlled using visual feedback. In order to complete the uni-manual tasks, subject was asked to grip the strain gauge using index finger and thumb of right hand thereby exerting force on connected visual feedback system. Whereas the bi-manual task involved finger abduction of left index finger in two contractions along with visual feedback system and at the same time the right hand gripped using definite force on two conditions that whether visual feedback existed or not for right hand.Results: Primarily, the existence of visual feedback for right hand significantly decreased brain network global and local efficiency in theta and alpha band when compared with the elimination of visual feedback.Conclusions: Brain network activity in theta and alpha band coordinate to facilitate fine hand movement. The findings may provide a new neurological insight on virtual reality auxiliary equipment and subjects with neurological disorders that cause movement errors requiring accuracy motor training.

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EEG coherence changes between right and left motor cortical areas during voluntary muscular contraction

Cited by 8 publications

References 14 publications

Interhemispheric connectivity during bimanual isometric force generation

Interhemispheric connectivity during bimanual isometric force generation

Neuroergonomics Applications of Electroencephalography in Physical Activities: A Systematic Review

Effect of Visual Feedback on Behavioral Control and Functional Activity During Bilateral Hand Movement

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