Imagery Improves Upper Extremity Motor Function in Chronic Stroke Patients: A Pilot Study

2000 ◽  
Vol 20 (3) ◽  
pp. 200-215 ◽  
Author(s):  
Stephen J. Page
Keyword(s):  
Pilot Study ◽  
Upper Extremity ◽  
Motor Function ◽  
Chronic Stroke ◽  
Stroke Patients

Structural Magnetic Resonance Imaging Correlated with Motor Function of Upper Extremity in Patients with Chronic Stroke

QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Dalia Maher Samy ◽  
Mohamed Mahmoud Mostafa ◽  
Eman Mahmoud ◽  
Ahmed Mohamed Hazzou ◽  
Mohamed Khaled Ahmed Elewa ◽  
...  
Keyword(s):  
Upper Extremity ◽  
Motor Function ◽  
Cross Sectional Study ◽  
Chronic Stroke ◽  
Neurological Dysfunction ◽  
Stroke Patients ◽  
Cross Sectional ◽  
Function Impairment ◽  
Cerebrovascular Stroke ◽  
The Brain

Abstract Background Ischemic cerebrovascular stroke is defined as an acute neurological dysfunction caused by focal cerebral infarction after decrease in the blood supply of the brain either by stenosis or occlusion leading to gross physical impairment or disability lasting more than 24 hours. Objective To assess correlation between site of infarction and upper extremity ( UE) function in chronic stroke patients. Methodology A cross sectional study with (30) Patients with chronic ischemic stroke ( >3 months) suffering from persistent UE motor function impairment, MRI brain done to assess the site of infarction. UE motor function assessment using the Fugl Meyer Assessment (FMA-UE) Scale. Results The current study found that no significant correlation between the site of infarction and UE motor function. Conclusion We concluded that the site of infarction not correlated with UE motor function in chronic stroke patients.

scholarly journals Therapeutic Efficacy of Transcutaneous Electrical Nerve Stimulation Acupoints on Motor and Neural Recovery of the Affected Upper Extremity in Chronic Stroke: A Sham-Controlled Randomized Clinical Trial

Healthcare ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 614
Author(s):  
Reem M. Alwhaibi ◽  
Noha F. Mahmoud ◽  
Hoda M. Zakaria ◽  
Walaa M. Ragab ◽  
Nisreen N. Al Awaji ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Upper Extremity ◽  
Motor Function ◽  
Nerve Stimulation ◽  
Transcutaneous Electrical Nerve Stimulation ◽  
Chronic Stroke ◽  
Post Treatment ◽  
Motor Area ◽  
Stroke Patients ◽  
Electrical Nerve Stimulation

Inability to use the affected upper extremity (UE) in daily activities is a common complaint in stroke patients. The somatosensory system (central and peripheral) is essential for brain reorganization and plasticity. Neuromuscular electrical stimulation is considered an effective modality for improving UE function in stroke patients. The aim of the current study was to determine the therapeutic effects of transcutaneous electrical nerve stimulation (TENS) acupoints on cortical activity and the motor function of the affected UE in chronic stroke patients. Forty male and female patients diagnosed with stroke agreed to join the study. They were randomly assigned to group 1 (G1) and group 2 (G2). G1 received task-specific training (TST) and sham electrical stimulation while G2 received TST in addition to TENS acupoints. Session duration was 80 min. Both groups received 18 sessions for 6 successive weeks, 3 sessions per week. Evaluation was carried out before and after completion of the treatment program. Outcome measures used were the Fugl-Meyer Assessment of the upper extremity (FMA-UE) and the box and block test (BBT) as measures of the motor function of the affected UE. Brain activity of the motor area (C3) in the ipsilesional hemisphere was measured using a quantitative electroencephalogram (QEEG). The measured parameter was peak frequency. It was noted that the motor function of the affected UE improved significantly post-treatment in both groups, while no significant change was reported in the FMA-UE and BBT scores post-treatment in either G1 or G2. On the other hand, the activity of the motor area C3 improved significantly in G2 only, post-treatment, while G1 showed no significant improvement. There was also significant improvement in the activity of the motor area (C3) in G2 compared to G1 post-treatment. The results of the current study indicate that TST only or combined with TENS acupoints can be considered an effective method for improving motor function of the affected UE in chronic stroke patients, both being equally effective. However, TST combined with TENS acupoints proved better in improving brain plasticity in chronic stroke patients.

Abstract P58: Motor Recovery After Chronic Stroke Correlates With Diffusion Tensor Measures of Ipsilesional Cerebral and Cerebellar White Matter Integrity

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Sarah N Chiang ◽  
Siddharth Rana ◽  
Joseph B Humphries ◽  
Eric C Leuthardt
Keyword(s):  
White Matter ◽  
Upper Extremity ◽  
Motor Function ◽  
Diffusion Tensor ◽  
Mean Diffusivity ◽  
Rehabilitation Program ◽  
Chronic Stroke ◽  
Stroke Patients ◽  
Cerebellar White Matter ◽  
Time Points

Introduction: We aimed to determine whether white matter (WM) tract integrity improved after a brain-computer interface (BCI) rehabilitation program for chronic stroke patients with upper extremity weakness. Mean diffusivity (MD) was calculated from diffusion tensor imaging (DTI) and is an indication of the integrity of axons and myelination in WM. MD is a biomarker in subacute stroke for post-stroke motor deficits and recovery. Methods: DTI scans were performed with 9 chronic hemiplegic stroke patients within 2 weeks of initiation and completion of a 12-week BCI rehabilitation program. All patients were a minimum of 6 months post-stroke. MD was then calculated using DSI-Studio for WM tracts in each patient at both pre- and post-therapy time points. Motor function was evaluated at these time points using the upper extremity portion of the Fugl-Meyer Assessment (UEFM). Voxelwise statistical analysis comparing pre- and post-intervention MD values was carried out using tract-based spatial statistics (TBSS). Relationships between MD measures in regions of interest and changes in motor function were estimated with Spearman correlations. Results: Voxelwise analysis using TBSS showed no significant group-level change in MD of WM tracts throughout the brain after completing BCI rehabilitation. However, the change in MD in ipsilesional cerebral WM was positively correlated with UEFM change (Spearman’s rho = 0.75, p = 0.02) as was the pre-BCI MD in the ipsilesional cerebellar WM (rho = 0.78, p = 0.01). The correlations between contralesional MD measures and UEFM change were not statistically significant. Conclusion: Correlation between changes in mean diffusivity of ipsilesional cerebral white matter and motor improvement in chronic stroke supports the literature that recovery may be mediated by axonal remyelination and regeneration. Furthermore, we find that pre-therapy, ipsilesional cerebellar white matter MD correlates with motor recovery and as such may serve as a predictive measure of the effectiveness of BCI therapy for patients.

Abstract T P123: Non-invasive Brain Stimulation for Motor Function of Chronic Stroke Patients

Stroke ◽  
2014 ◽  
Vol 45 (suppl_1) ◽  
Author(s):  
Eunhee Park ◽  
Tae Gun Kwon ◽  
Won Hyuk Chang ◽  
Yun-Hee Kim
Keyword(s):  
Motor Function ◽  
Brain Stimulation ◽  
Movement Time ◽  
Motor Task ◽  
Chronic Stroke ◽  
Stroke Patients ◽  
Dual Mode ◽  
Simultaneous Application ◽  
Corticomotor Excitability ◽  
Cathodal Tdcs

Objective: The purpose of this study was to investigate the effect of dual-mode noninvasive brain stimulation (NBS) by combining transcranial direct current stimulation (tDCS) over the unaffected primary motor cortex (uM1) and high-frequency repetitive transcranial magnetic stimulation (rTMS) over the affected M1 (aM1) on motor functions and corticomotor excitability in chronic stroke patients. Methods: Seventeen chronic stroke patients (12 men; mean age 58.7 years; 12 infarctions and 5 hemorrhages) participated in this double blinded random-order crossover study. All participants received three randomly arranged, dual-mode stimulations with 24 hours of washout period; Condition 1, simultaneous application of 10 Hz rTMS over the aM1 and cathodal tDCS over the uM1; Condition 2, simultaneous application of 10 Hz rTMS over the M1a and anodal tDCS over the uM1; Condition 3, 10 Hz rTMS over the aM1 and sham tDCS over the uM1. Corticomotor excitability using motor evoked potential (MEP) amplitude and hand motor functions using the sequential motor task were assessed before and after stimulation. Results: MEP amplitude was significantly increased after condition 1 and 3, respectively (p<0.05). The changes of MEP amplitude were significantly higher in condition 1 than condition 2 (p<0.05). In sequential motor task, the movement time was significantly decreased after condition 1 and 3, respectively (p<0.05). The change of movement time was significantly larger in condition 1 than the other conditions (p<0.05). Conclusions: Simultaneous stimulation of cathodal tDCS over the uM1 produced enhancement of 10 Hz rTMS effect over the aM1 in patients with stroke. These results suggest the dual-mode NBS as a method of enhancing motor function probably by inducing interhemispheric interaction of bilateral primary motor cortices in chronic stroke patients (Supported by the National Research Foundation of Korea grant (No.2011-0016960) and a KOSEF grant (M10644000022-06N4400-02210)).

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