scholarly journals Transcranial electrical motor evoked potentials as a prognostic indicator for motor recovery in stroke patients.

1990 ◽  
Vol 53 (9) ◽  
pp. 745-748 ◽  
Author(s):  
M Dominkus ◽  
W Grisold ◽  
V Jelinek
Keyword(s):  
Evoked Potentials ◽  
Motor Evoked Potentials ◽  
Prognostic Indicator ◽  
Motor Recovery ◽  
Stroke Patients

Predicting Hand Motor Recovery in Severe Stroke: The Role of Motor Evoked Potentials in Relation to Early Clinical Assessment

2008 ◽  
Vol 23 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Annette A. van Kuijk ◽  
Jaco W. Pasman ◽  
Henk T. Hendricks ◽  
Machiel J. Zwarts ◽  
Alexander C. H. Geurts
Keyword(s):  
Lower Extremity ◽  
Evoked Potentials ◽  
Upper Extremity ◽  
Clinical Assessment ◽  
Predictive Value ◽  
Motor Evoked Potentials ◽  
Motor Recovery ◽  
Stroke Patients ◽  
Abductor Digiti Minimi

Objective. The primary aim of this study was to compare the predictive value of motor evoked potentials (MEPs) and early clinical assessment with regard to long-term hand motor recovery in patients with profound hemiplegia after stroke. Methods. The sample was an inception cohort of 39 stroke patients with an acute, ischemic, supratentorial stroke and an initial upper-extremity paralysis admitted to an academic hospital. Hand motor function recovery was defined at 26 weeks poststroke as a Fugl–Meyer Motor Assessment (FMA) hand score >3 points. The following prognostic factors were compared at week 1 and week 3 poststroke: motor functions as assessed by the FMA upper-extremity and lower-extremity subscores, and the presence of an MEP in the abductor digiti minimi and biceps brachii muscle. Results. Both the presence of an abductor digiti minimi–MEP and any motor recovery in the FMA upper-extremity subscore showed a positive predictive value of 1.00 at weeks 1 and 3. The FMA lower-extremity subscore showed the best negative predictive value (0.90; 95% CI 0.78-1.00 at week 1 and 0.95; 95% CI 0.87-1.00 at week 3). Conclusions. In stroke patients with an initial paralysis of the upper extremity the presence or absence of an MEP has similar predictive value compared with early clinical assessment with regard to long-term hand motor recovery.

The Effect of Low versus High Frequency Electrical Acupoint Stimulation on Motor Recovery After Ischemic Stroke by Motor Evoked Potentials Study

2008 ◽  
Vol 36 (01) ◽  
pp. 45-54 ◽  
Author(s):  
Young Suk Kim ◽  
Jin Woo Hong ◽  
Byung Jo Na ◽  
Seong Uk Park ◽  
Woo Sang Jung ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Evoked Potentials ◽  
High Frequency ◽  
Motor Evoked Potentials ◽  
Low Frequency ◽  
Motor Recovery ◽  
Motor Dysfunction ◽  
Stroke Patients ◽  
Affected Side ◽  
Acupoint Stimulation

Electrical acupoint stimulation (EAS) has been used to treat motor dysfunction of stroke patients with reportedly effective results. When we operate EAS treatment, we can modulate the intensity and frequency of stimulation. The purpose of this study is to evaluate the effect of different frequencies in treating motor dysfunction of ischemic stroke patients with EAS. The subjects of this study were 62 ischemic stroke patients with motor dysfunction in Kyunghee oriental medical center. They have been hospitalized after 1 week to 1 month from onset. They were treated with 2 Hz or 120 Hz EAS for 2 weeks, and had motor evoked potentials (MEPs) tests before and after 2 weeks of EAS treatment. We measured latency, central motor conduction time (CMCT) and amplitude of MEPs. After 2 weeks of treatment, we compared MEPs data of the affected side between the 2 Hz group and the 120 Hz group. The 2 Hz group showed more significant improvement than the 120 Hz group in latency, CMCT and amplitude ( p = 0.008, 0.002, 0.002). In the case of the affected side MEPs data divided by normal side MEPs data, the 2 Hz group also showed higher improvement rate than the 120 Hz group in latency, CMCT and amplitude with significant differences ( p = 0.003, 0.000, 0.008). These results suggest that low frequency EAS activates the central motor conduction system better than high frequency EAS, and EAS with low frequency could be more helpful for motor recovery after ischemic stroke than that with high frequency.

Effects of repetitive transcranial magnetic stimulation combined with transcranial direct current stimulation on motor function and cortex excitability in subacute stroke patients: A randomized controlled trial

2020 ◽  
pp. 026921552097294
Author(s):  
Yan Gong ◽  
Xian-Ming Long ◽  
Ying Xu ◽  
Xiu-Ying Cai ◽  
Ming Ye
Keyword(s):  
Evoked Potentials ◽  
Motor Function ◽  
Lower Limb ◽  
Motor Evoked Potentials ◽  
Repetitive Transcranial Magnetic Stimulation ◽  
Controlled Trial ◽  
Change Score ◽  
Stroke Patients ◽  
Subacute Stroke ◽  
Motion Threshold

Objective: To explore effects of repetitive transcranial magnetic stimulation (rTMS) combined with transcranial direct current stimulation (tDCS) on motor function and cortex excitability in subacute stroke patients. Design: Randomized controlled trial. Setting: Inpatient hospitals. Subjects: Sixty-five participants were randomly assigned to four groups: sham, 1Hz rTMS, cathodic tDCS combined with 1Hz rTMS (tDCS-/rTMS-) and anodic tDCS combined with 1Hz rTMS (tDCS+/rTMS-). Interventions: Four interventions were used, including sham, 1Hz rTMS, and cathodal or anodal tDCS, followed by 1Hz rTMS over contralesional motor cortex, which continued for four weeks. Main measures: Outcome measures were motor function and cortical excitability, evaluated by Fugl-Meyer Assessment, National Institutes of Health Stroke Scale and Barthel Index, resting Motion Threshold, Motor Evoked Potentials and Central Motor Conduction Time, assessed at baseline, four weeks and eight weeks. Results: At four weeks after interventions, Fugl-Meyer Assessment lower limb change score in tDCS+/rTMS- group was significantly larger than other three groups ( P < 0.001). There were significant differences in bilateral Motor Evoked Potentials changes between tDCS+/rTMS- group and sham group ( P < 0.05). At eight weeks, compared to other groups, National Institutes of Health Stroke Scale ( P = 0.003), Barthel Index ( P = 0.002), FMA lower limb score ( P < 0.001), and bilateral resting Motion Threshold, Motor Evoked Potentials ( P < 0.05) showed significant changes in tDCS+/rTMS- group. Furthermore, Fugl-Meyer Assessment lower limb change score was associated with increased ipsilesional Motor Evoked Potentials ( r = 0.703 P < 0.001) in tDCS+/rTMS- group. Conclusion: 1Hz rTMS combined with anode tDCS stimulation protocol could be a preferable rehabilitative strategy for motor recovery in subacute stroke patients.

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