Electroencephalographic markers of robot-aided therapy in stroke patients for the evaluation of upper limb rehabilitation

Barriers and Facilitators of Using Standardized Outcome Measures in Stroke Rehabilitation in Saudi Arabia: A Cross-Sectional Study of Practice Among Neurophysiotherapists

Background

Clinical guidelines emphasize the use of standardized outcome measures (SOMs) in post-stroke rehabilitation. However, the extent of SOM utilization among physiotherapists in this context in Saudi Arabia remains unclear.

Aim

1) assess the current use of SOMs by physiotherapists involved in stroke rehabilitation in Saudi Arabia and 2) identify facilitators and barriers influencing the use of SOMs.

Methods

An online survey was administered using a three-section questionnaire designed for this study. The first section collected demographic data, the second evaluated the use of SOMs recommended by the American Physical Therapy Association, and the third explored factors facilitating or hindering SOM use in clinical practice. Only highly recommended outcome measures capturing the three levels of the International Classification of Functioning, and Disability (ICF) model were considered: body structure and function, activities, and participation. Poisson regression analysis was used to investigate the association between SOMs utilization and educational level, work experience, type of work facility, and the number of patients treated per week.

Results

A total of 138 physiotherapists responded. Most participants (98.5%) used at least one outcome measure in clinical practice. Regression analysis showed that number of strokes treated per week and facility type were associated with the likelihood of using higher number of SOMs. Physiotherapists managing more than 10 stroke patients per week and working in private sector had significantly higher odds of using a greater number of SOMs. The most pronounced barriers were time restrictions and limited resources.

Conclusion

Physiotherapists working with stroke patients in Saudi Arabia demonstrate a high awareness and positive attitude toward SOM utilization. Addressing barriers such as time management and resource allocation is crucial to enhancing SOM integration in clinical practice.

Clinical Rehabilitation Impact

Organizational support in terms of adequate time and resources is needed to enhance the use of SOMs among physiotherapists.

Combination of Stem Cells and Rehabilitation Therapies for Ischemic Stroke

Stem cell transplantation with rehabilitation therapy presents an effective stroke treatment. Here, we discuss current breakthroughs in stem cell research along with rehabilitation strategies that may have a synergistic outcome when combined together after stroke. Indeed, stem cell transplantation offers a promising new approach and may add to current rehabilitation therapies. By reviewing the pathophysiology of stroke and the mechanisms by which stem cells and rehabilitation attenuate this inflammatory process, we hypothesize that a combined therapy will provide better functional outcomes for patients. Using current preclinical data, we explore the prominent types of stem cells, the existing theories for stem cell repair, rehabilitation treatments inside the brain, rehabilitation modalities outside the brain, and evidence pertaining to the benefits of combined therapy. In this review article, we assess the advantages and disadvantages of using stem cell transplantation with rehabilitation to mitigate the devastating effects of stroke.

Detecting voluntary gait intention of chronic stroke patients towards top-down gait rehabilitation using EEG

One of the recent trends in gait rehabilitation is to incorporate bio-signals, such as electromyography (EMG) or electroencephalography (EEG), for facilitating neuroplasticity, i.e. top-down approach. In this study, we investigated decoding stroke patients' gait intention through a wireless EEG system. To overcome patient-specific EEG patterns due to impaired cerebral cortices, common spatial patterns (CSP) was employed. We demonstrated that CSP filter can be used to maximize the EEG signal variance-ratio of gait and standing conditions. Finally, linear discriminant analysis (LDA) classification was conducted, whereby the average accuracy of 73.2% and the average delay of 0.13 s were achieved for 3 chronic stroke patients. Additionally, we also found out that the inverse CSP matrix topography of stroke patients' EEG showed good agreement with the patients' paretic side.

Topographical measures of functional connectivity as biomarkers for post-stroke motor recovery

BACKGROUND

Biomarkers derived from neural activity of the brain present a vital tool for the prediction and evaluation of post-stroke motor recovery, as well as for real-time biofeedback opportunities.

METHODS

In order to encapsulate recovery-related reorganization of brain networks into such biomarkers, we have utilized the generalized measure of association (GMA) and graph analyses, which include global and local efficiency, as well as hemispheric interdensity and intradensity. These methods were applied to electroencephalogram (EEG) data recorded during a study of 30 stroke survivors (21 male, mean age 57.9 years, mean stroke duration 22.4 months) undergoing 12 weeks of intensive therapeutic intervention.

RESULTS

We observed that decreases of the intradensity of the unaffected hemisphere are correlated (r s =-0.46;p<0.05) with functional recovery, as measured by the upper-extremity portion of the Fugl-Meyer Assessment (FMUE). In addition, high initial values of local efficiency predict greater improvement in FMUE (R 2=0.16;p<0.05). In a subset of 17 subjects possessing lesions of the cerebral cortex, reductions of global and local efficiency, as well as the intradensity of the unaffected hemisphere are found to be associated with functional improvement (r s =-0.60,-0.66,-0.75;p<0.05). Within the same subgroup, high initial values of global and local efficiency, are predictive of improved recovery (R 2=0.24,0.25;p<0.05). All significant findings were specific to the 12.5-25 Hz band.

CONCLUSIONS

These topological measures show promise for prognosis and evaluation of therapeutic outcomes, as well as potential application to BCI-enabled biofeedback.

Spontaneous and Therapeutic-Induced Mechanisms of Functional Recovery After Stroke

With increasing rates of survival throughout the past several years, stroke remains one of the leading causes of adult disability. Following the onset of stroke, spontaneous mechanisms of recovery at the cellular, molecular, and systems levels ensue. The degree of spontaneous recovery is generally incomplete and variable among individuals. Typically, the best recovery outcomes entail the restitution of function in injured but surviving neural matter. An assortment of restorative therapies exists or is under development with the goal of potentiating restitution of function in damaged areas or in nearby ipsilesional regions by fostering neuroplastic changes, which often rely on mechanisms similar to those observed during spontaneous recovery. Advancements in stroke rehabilitation depend on the elucidation of both spontaneous and therapeutic-driven mechanisms of recovery. Further, the implementation of neural biomarkers in research and clinical settings will enable a multimodal approach to probing brain state and predicting the extent of post-stroke functional recovery. This review will discuss spontaneous and therapeutic-induced mechanisms driving post-stroke functional recovery while underscoring several potential restorative therapies and biomarkers.