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Ankle-Foot-Orthosis “Hermes” Compensates Pathological Ankle Stiffness of Chronic Stroke—A Proof of Concept
Individuals with an upper motor neuron syndrome, e.g., stroke survivors, may have a pathological increase of passive ankle stiffness due to spasticity, that impairs ankle function and activities such as walking. To improve mobility, walking aids such as ankle-foot orthoses and orthopaedic shoes are prescribed. However, these walking aids generally limit the range of motion (ROM) of the foot and may therewith negatively influence activities that require a larger ROM. Here we present a new ankle-foot orthosis “Hermes”, and its first experimental results from four hemiparetic chronic stroke patients. Hermes was ...
Source: IEE Transactions on Neural Systems and Rehabilitation Engineering - September 7, 2023 Category: Neuroscience Source Type: research

Motor Imagery Hand Movement Direction Decoding Using Brain Computer Interface to Aid Stroke Recovery and Rehabilitation
Motor Imagery (MI)-based Brain Computer Interface (BCI) system is a potential technology for active neurorehabilitation of stroke patients by complementing the conventional passive rehabilitation methods. Research to date mainly focused on classifying left vs. right hand/foot MI of stroke patients. Though a very few studies have reported decoding imagined hand movement directions using electroencephalogram (EEG)-based BCI, the experiments were conducted on healthy subjects. Our work analyzes MI-based brain cortical activity from EEG signals and decodes the imagined hand movement directions in stroke patients. The decoded d...
Source: IEE Transactions on Neural Systems and Rehabilitation Engineering - December 1, 2020 Category: Neuroscience Source Type: research

Neuron-Specific Markers and their Correlation with Neurological Scales in Patients with Acute Neuropathologies
AbstractIn predicting outcomes in patients with acute brain injury, current practice focuses special attention on neuron-specific proteins that reliably reflect the severity of the lesion. Further studies of molecular markers and their specificity and sensitivity could contribute to broadening the understanding of pathophysiological, diagnostic, and prognostic methods, which is vital to reducing the mortality and disability associated with these critical conditions. The purpose of this study was to assess the biomarkers of brain lesions and their correlative relations with the integral Glasgow Coma Scale (GCS) and National...
Source: Journal of Molecular Neuroscience - April 28, 2020 Category: Neuroscience Source Type: research

An Omnidirectional Assistive Platform Integrated With Functional Electrical Stimulation for Gait Rehabilitation: A Case Study
This paper presents a novel omnidirectional platform for gait rehabilitation of people with hemiparesis after stroke. The mobile platform, henceforth the “walker”, allows unobstructed pelvic motion during walking, helps the user maintain balance and prevents falls. The system aids mobility actively by combining three types of therapeutic intervention: forward propulsion of the pelvis, controlled body weight support, and functional electrical stimulation (FES) for compensation of deficits in angular motion of the joints. FES is controlled using gait data extracted from a set of inertial measurement units (IMUs...
Source: IEE Transactions on Neural Systems and Rehabilitation Engineering - February 29, 2020 Category: Neuroscience Source Type: research

Sestrin2 Overexpression Attenuates Focal Cerebral Ischemic Injury in Rat by Increasing Nrf2/HO-1 Pathway-Mediated Angiogenesis
In this study the investigators examine the effects of Sesn2 on cerebral ischemia damage by increasing angiogenesis through the Nrf2/HO-1 signaling pathway. Healthy adult Sprague–Dawley (SD) rats were exposed to photochemical cerebral ischemia while AAV injection was used to overexpress Sesn2. At five days after photochemical embolization, the investigators observed a reduction in neurological problems, decreased infarct volume, and diminished neuronal injury in the Sesn2 overexpression samples compared to the controls. To further explore these defensive mechanisms, the investigators also silenced Nrf2. While Sesn2, Nrf2...
Source: Neuroscience - May 12, 2019 Category: Neuroscience Source Type: research

Lower-extremity Dynamometry as a Novel Outcome Measure in a Double-blind, Placebo-controlled, Feasibility Trial of Intravenous Immunoglobulin (IVIG) for HIV-associated Myelopathy
Conclusion: We conclude that an adequately powered clinical trial of IVIG for HIVM would likely require a prolonged recruitment period and multiple participating sites. Lower limb dynamometry is a useful outcome measure for HIVM, which might also be useful in other HIV-related gait disorders. KEYWORDS: Dynamometry, intravenous immunoglobulin (IVIG), human immunodeficiency virus (HIV), myelopathy INTRODUCTION Human immunodeficiency virus (HIV)-associated myelopathy (HIVM) is a rare but well-described neurologic complication of HIV; it was first described early in the acquired immunodeficiency syndrome (AIDS) epidemic, and i...
Source: Innovations in Clinical Neuroscience - February 1, 2018 Category: Neuroscience Authors: ICN Online Editor Tags: Assessment Tools Current Issue Demyelinating Disease Movement Disorders Neurodegenerative Disease Neurology Original Research Primary Care Technology Trial Methodology Dynamometry human immunodeficiency virus (HIV) intravenous immu Source Type: research

CNS Summit 2017 Abstracts of Poster Presentations
Conclusion: This novel technology discriminates and quantifies subtle differences in behavior and neurological impairments in subjects afflicted with neurological injury/disease. KINARM assessments can be incorporated into multi-center trials (e.g., monitoring stroke motor recovery: NCT02928393). Further studies will determine if KINARM Labs can demonstrate a clinical effect with fewer subjects over a shorter trial period. Disclosures/funding: Dr. Stephen Scott is the inventor of KINARM and CSO of BKIN Technologies.   Multiplexed mass spectrometry assay identifies neurodegeneration biomarkers in CSF Presenter: Chelsky...
Source: Innovations in Clinical Neuroscience - November 1, 2017 Category: Neuroscience Authors: ICNS Online Editor Tags: Assessment Tools biomarkers Cognition Current Issue Drug Development General Genetics Medical Issues Neurology Patient Assessment Psychopharmacology Scales Special Issues Supplements Trial Methodology clinical trials CNS Su Source Type: research