Motor imagery training induces changes in brain neural networks in stroke patients

Li, Fang; Zhang, Tong; Li, Bingjie; Zhang, Wei; Zhao, Jun; Song, Lina

doi:10.4103/1673-5374.238616

Cited by 26 publications

(21 citation statements)

References 59 publications

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“…When used in research, participants are required to imagine executing an action without doing the corresponding movement (Papaxanthis et al, 2002 ; Fadiga et al, 2005 ). MI comprises the visualization of the required movement, which necessitates the implication of a dynamic brain network (Fadiga and Craighero, 2004 ; Li et al, 2018 ). Regardless of whether the movement is global, i.e., involving the whole body, or segmental, i.e., involving part of the body, the neural composition of this network is still under investigation.…”

Section: Introductionmentioning

confidence: 99%

Neural Kinesthetic Contribution to Motor Imagery of Body Parts: Tongue, Hands, and Feet

Giannopulu

Mizutani

2021

Front. Hum. Neurosci.

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Motor imagery (MI) is assimilated to a perception-action process, which is mentally represented. Although several models suggest that MI, and its equivalent motor execution, engage very similar brain areas, the mechanisms underlying MI and their associated components are still under investigation today. Using 22 Ag/AgCl EEG electrodes, 19 healthy participants (nine males and 10 females) with an average age of 25.8 years old (sd = 3.5 years) were required to imagine moving several parts of their body (i.e., first-person perspective) one by one: left and right hand, tongue, and feet. Network connectivity analysis based on graph theory, together with a correlational analysis, were performed on the data. The findings suggest evidence for motor and somesthetic neural synchronization and underline the role of the parietofrontal network for the tongue imagery task only. At both unilateral and bilateral cortical levels, only the tongue imagery task appears to be associated with motor and somatosensory representations, that is, kinesthetic representations, which might contribute to verbal actions. As such, the present findings suggest the idea that imagined tongue movements, involving segmentary kinesthetic actions, could be the prerequisite of language.

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Section: Introductionmentioning

confidence: 99%

Neural Kinesthetic Contribution to Motor Imagery of Body Parts: Tongue, Hands, and Feet

Giannopulu

Mizutani

2021

Front. Hum. Neurosci.

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“…After title, abstract, and then full text screening, fifteen studies were selected for narrative review and presented in Table 1. 19,26,27,[38][39][40][41][42][43][44][45][46][47][48][49] Four authors were contacted and asked to provide data which would allow meta-analysis; 44,46,47,49 one responded with data, another responded but did not provide the data, two did not respond but the data for one of these two was able to be extracted from Barclay-Goddard et al's (2011) Cochrane review. 8 This left 12 studies that were suitable for meta-analysis.…”

Section: Resultsmentioning

confidence: 99%

“…6 7,15 Consequently MP may provide a 'back door' to the motor cortex as it facilitates motor cortex activity and neuroplasticity without physical movement. 15,[17][18][19] Studies indicate that the majority of people can undertake MP within the first six weeks after stroke. This does vary depending upon the test used to assess MP ability, 16,20,21 but the ability to undertake MP after stroke does not appear to be significantly influenced by age.…”

Section: A Systematic Review and Meta-analysis Of The Effectiveness Of Mental Practice For The Upper-limb After Stroke: Imagined Or Real mentioning

confidence: 99%

Systematic Review and Meta-Analysis of the Effectiveness of Mental Practice for the Upper Limb After Stroke: Imagined or Real Benefit?

Stockley

Jarvis

Boland

et al. 2021

Archives of Physical Medicine and Rehabilitation

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Objective: This systematic review sought to determine the effectiveness of mental practice (MP) upon the activity limitations of the upper-limb in people after stroke, and when, in whom and how it should be delivered. Data sources: Ten electronic databases were searched from November 2009 to May 2020. Search terms included: Arm; Practice; Stroke Rehabilitation; Imagination; Paresis; Recovery of Function; Stroke Studies from a Cochrane review of MP (up to November 2009) were automatically included. The review was registered with Prospero database of systematic reviews (Reference number: CRD42019126044). Study selection: Randomised controlled trials of adults after stroke using MP for the upper-limb were included if they compared to usual care, conventional therapy or no treatment and reported activity limitations of the upper-limb as outcomes. Independent screening was carried out by two reviewers. Data extraction: One reviewer extracted data using a tool based upon the Template for Intervention Description and Replication. Data extraction was independently verified by a second reviewer. Quality was assessed using the PEDro tool.Data Synthesis: Fifteen studies (n=486) were included and 12 (n=328) underwent meta-analysis. MP demonstrated significant benefit upon upper-limb activities compared to usual treatment (standardised mean difference, SMD: 0.6, 95% 4 confidence intervals, CI: 0.32 to 0.88). Sub-group analyses demonstrated that MP appeared most effective in the first 3 months after stroke (SMD: 1.01, 95% CI: 0.53 to1.50) and in people with the most severe upper-limb deficits (weighted mean difference, WMD: 7.33; 95% CI:0.94 to 13.72). Conclusions:This review demonstrates that MP appears effective in reducing activity limitations of the upper-limb after stroke particularly in people in the first three months after stroke and in those with the most severe upper-limb dysfunction. There was no clear pattern of the ideal dosage of MP.

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“…MI can also be executed in patients who have difficulty performing motions, particularly in those with cerebrovascular disease, and it has been reported as an effective method for improving motor function ( Page et al, 2001 , 2011 ; Liu et al, 2004 ; Sharma et al, 2006 ; Riccio et al, 2010 ). As a treatment strategy, MI is regarded as a method for complementing motion performances due to the exhibition of similar brain activation to that caused by performing motions, which has been reported to change brain plasticity ( Ruffino et al, 2017 ; Li et al, 2018 ; Yoxon and Welsh, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Hemodynamic Signal Changes During Motor Imagery Task Performance Are Associated With the Degree of Motor Task Learning

Iso

Moriuchi

Fujiwara

et al. 2021

Front. Hum. Neurosci.

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PurposeThis study aimed to investigate whether oxygenated hemoglobin (oxy-Hb) generated during a motor imagery (MI) task is associated with the motor learning level of the task.MethodsWe included 16 right-handed healthy participants who were trained to perform a ball rotation (BR) task. Hemodynamic brain activity was measured using near-infrared spectroscopy to monitor changes in oxy-Hb concentration during the BR MI task. The experimental protocol used a block design, and measurements were performed three times before and after the initial training of the BR task as well as after the final training. The BR count during training was also measured. Furthermore, subjective vividness of MI was evaluated three times after NIRS measurement using the Visual Analog Scale (VAS).ResultsThe results showed that the number of BRs increased significantly with training (P < 0.001). VAS scores also improved with training (P < 0.001). Furthermore, oxy-Hb concentration and the region of interest (ROI) showed a main effect (P = 0.001). An interaction was confirmed (P < 0.001), and it was ascertained that the change in oxy-Hb concentrations due to training was different for each ROI. The most significant predictor of subjective MI vividness was supplementary motor area (SMA) oxy-Hb concentration (coefficient = 0.365).DiscussionHemodynamic brain activity during MI tasks may be correlated with task motor learning levels, since significant changes in oxy-Hb concentrations were observed following initial and final training in the SMA. In particular, hemodynamic brain activity in the SMA was suggested to reflect the MI vividness of participants.

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Motor imagery training induces changes in brain neural networks in stroke patients

Cited by 26 publications

References 59 publications

Neural Kinesthetic Contribution to Motor Imagery of Body Parts: Tongue, Hands, and Feet

Neural Kinesthetic Contribution to Motor Imagery of Body Parts: Tongue, Hands, and Feet

Systematic Review and Meta-Analysis of the Effectiveness of Mental Practice for the Upper Limb After Stroke: Imagined or Real Benefit?

Hemodynamic Signal Changes During Motor Imagery Task Performance Are Associated With the Degree of Motor Task Learning

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