The evolution of contralateral control of the body by the brain: Is it a protective mechanism?

Whitehead, Lorne; Banihani, Saleh M.

doi:10.1080/1357650x.2013.824461

Cited by 11 publications

(8 citation statements)

References 10 publications

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“…Simultaneously, this phenomenon occurred in the frequency interval V, and the coupling direction was from RPFC, RMC, ROC, and LOC to LMC. This phenomenon might be correlated with the habit of the right–handedness of the subjects, as a mechanism derived from the contralateral control of the brain 80 . However, the coupling direction in the TCC group during the resting state was from PFC, LMC, and OC to RMC, which was different from that of the left brain drive pattern in the control group.…”

Section: Discussionmentioning

confidence: 90%

Tai Chi Chuan exercise related change in brain function as assessed by functional near–infrared spectroscopy

Xie

Zhang

Huo

et al. 2019

Sci Rep

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Early studies have shown that Tai Chi Chuan (TCC) contributes to the rehabilitation of cognitive disorders and increases blood oxygen concentration levels in the parietal and occipital brain areas; however, the mechanism of TCC training on brain function remains poorly understood. This study hypothesize that TCC has altered brain function and aims to explore the effects of TCC on functional connection and effective connection of the prefrontal cortex (PFC), motor cortex (MC), and occipital cortex (OC). The participants were 23 experienced Chen–style TCC practitioners (TCC group), and 32 demographically matched TCC–naive healthy controls (control group). Functional and effective connections were calculated using wavelet–based coherence analysis and dynamic Bayesian inference method, respectively. Results showed that beyond the intensity of activity in a particular cortical region induced by TCC, significant differences in brain activity and dynamic configuration of connectivity were observed between the TCC and control groups during resting and movement states. These findings suggested that TCC training improved the connection of PFC, MC and OC in myogenic activity, sympathetic nervous system, and endothelial cell metabolic activities; enhanced brain functional connections and relayed the ability of TCC to improve cognition and the anti–memory decline potential.

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Section: Discussionmentioning

confidence: 90%

Tai Chi Chuan exercise related change in brain function as assessed by functional near–infrared spectroscopy

Xie

Zhang

Huo

et al. 2019

Sci Rep

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“…6 Međutim, iako su polutke mozga u jednoj mjeri specijalizirane za određene funkcije koje obnašaju (primjerice procesiranje govora i jezika smješteno je u lijevoj polutci, Brockinu i Wernickeovu području), one su u stalnom kontaktu zbog principa kontralateralnosti (organizacije mozgovnih polutki koje u najvećoj mjeri motorički i senzorički inerviraju suprotnu stranu tijela). 7 Najnovija metaanaliza, koja je uključila više od dva milijuna sudionika iz cijelog svijeta, ukazuje na dominantnost desnorukosti te procjenjuje svjetsku prevalenciju ljevorukosti od 10,6 %. 8 Lateralnost ili dominantnost u upotrebi jedne strane tijela razvija se tijekom djetinjstva, počinje se stabilizirati s polaskom u osnovnu školu, a potpuna stabilnost koja se može usporediti s onom odrasle osobe može se uspostaviti tek između 10 i 12 godina.…”

Section: Uvodunclassified

Iskustvo svakodnevnog življenja ljevorukih osoba

Račić

Bartolac

2021

J. appl. health sci. (Online)

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Lateralnost ili dominantnost jedne strane tijela posljedica je evolucijskog razvoja ljudskog govora i kompleksnih vještina. Preferencija lijeve strane tijela javlja se u oko 10 % populacije. Osim genske predispozicije, i kulturološki čimbenici mogu utjecati na prevalenciju ljevorukosti. Cilj je ovog rada istražiti svakodnevna iskustva ljevorukih osoba u Hrvatskoj kroz odrastanje te u odrasloj dobi, identificirati aktivnosti koje ljevoruki pojedinci otežano izvode te kako procjenjuju svoju kvalitetu života u odnosu na ljevorukost. U istraživanju je primijenjen mješoviti istraživački nacrt. U svrhu prikupljanja podataka 686 sudionika ispunilo je elektronički upitnik kojim se ispituje iskustvo ljevorukih osoba pri sudjelovanju u svakodnevnim okupacijama, korištenju različitim priborom, alatom i načinu izvođenja okupacija te doživljena kvaliteta života. Rezultati ukazuju na znatan socijalni pritisak kojem su sudionici bili izloženi tijekom odrastanja (osobito očekivanje pisanja desnom rukom), kao i izazove s kojima se susreću u svakodnevnim okupacijama. Unatoč navedenim iskustvima, većina sudionika kvalitetu života ocjenjuje visokom, što tumače osobnom prilagodbom svijetu dešnjaka u kojem žive, no pritom naglašavaju potrebu za univerzalnim oblikovanjem uporabnih predmeta i okoline u smislu jednake pristupačnosti bez obzira na lateralizaciju.

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“…The emergence and evolution of noninvasive functional techniques, such as magnetic resonance imaging (fMRI) (Seghier 2008) and functional near-infrared spectroscopy (fNIRS) (Khaksari, Smith et al 2021, Zuniga, Pierce et al 2021, are now providing an additional characterization of cortical lateralization. This lateral dominance has been observed in a variety of species and is very likely tied to increased survival (Whitehead and Banihani 2014). The more prevalent contralateral dominance of motor control has, however, been found to adapt to various factors within the body.…”

Section: Introductionmentioning

confidence: 99%

Laterality Index Calculations in a Control Study of Functional Near Infrared Spectroscopy

et al. 2023

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Hemispheric dominance has been used to understand the in uence of central and peripheral neural damage on the motor function of individuals with stroke, cerebral palsy, and limb loss. It has been well established that greater activation occurs in the contralateral hemisphere to the side of the body used to perform the task. However, there is currently a large variability in calculation procedures for brain laterality when using functional near-infrared spectroscopy (fNIRS) as a non-invasive neuroimaging tool. In this study, we used fNIRS to measure brain activity over the left and right sensorimotor cortices while participants (n = 20, healthy and uninjured) performed left and right-hand movement tasks. Then, we analyzed the fNIRS data using two different processing pipelines (block averaging or general linear model [GLM]), two different criteria of processing for negative values (include all beta values or include only positive beta values), and three different laterality index (LI) formulas. The LI values produced using the block averaging analysis indicated an expected contralateral dominance with some instances of bilateral dominance, which agreed with the expected contralateral activation. However, the inclusion criteria nor the LI formulas altered the outcome. The LI values produced using the GLM analysis displayed a robust left hemisphere dominance regardless of the hand performing the task, which disagreed with the expected contralateral activation. In conclusion, we recommend using the block averaging analysis when calculating brain laterality as measured by fNIRS.

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The evolution of contralateral control of the body by the brain: Is it a protective mechanism?

Cited by 11 publications

References 10 publications

Tai Chi Chuan exercise related change in brain function as assessed by functional near–infrared spectroscopy

Tai Chi Chuan exercise related change in brain function as assessed by functional near–infrared spectroscopy

Iskustvo svakodnevnog življenja ljevorukih osoba

Laterality Index Calculations in a Control Study of Functional Near Infrared Spectroscopy

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