Stroke Clinical Trials

The goal of this clinical trial is to to determine the effect of movement-based priming using the upper limbs on lower limb neuroplasticity and behaviors in chronic stroke. The main questions we aim to answer are: 1. What are the acute effect of UL-priming on lower limb neuroplasticity and motor behaviors in persons with stroke compared to other priming modalities? 2. What are the time effects of UL-priming on neuroplasticity and motor behavior in individuals with stroke? In this cross over study, participants will be involved in three priming sessions involving - UL-priming using rhythmic, symmetric, bilateral priming involving the movement of at least one major joint in the upper limbs. AND - Sham priming using auditory stimulation (1 Hz metronome). AND - Lower-limb movement-based priming using rhythmic, symmetric, dorsiflexion and plantarflexion movements. Researchers will compare outcome measures between the different priming sessions. Read Less

The purpose of the study is to explore the feasibility of using a wearable device, called a myoelectric-computer interface (MCI), to improve arm movement in people who have had a stroke. Impaired arm movement after stroke is caused not just by weakness, but also by impaired coordination between joints due to abnormal co-activation of muscles. These abnormal co-activation patterns are thought to be due to abnormal movement planning.The MCI aims to reduce abnormal co-activation by providing feedback about individual muscle activations. This randomized, controlled, blinded study will test the home use of an MCI in chronic and acute stroke survivors. Read Less

More than one million Americans present with foot drop after stroke. As the aging population grows in the United States and across the world, incidence of stroke will grow as age is a key risk factor, thus there will be a need for low-cost, easy-to-use, and scalable solutions to administer proper therapy to promote recovery. This study will evaluate a Variable Friction shoe (VF shoe), a new low-cost medical device, for foot drop in an at-home setting. Read Less

The objective of this study is to determine if combining vibration with hand task practice is superior to hand task practice alone. Read Less

The purpose of this study is to investigate the effects of transcranial magnetic stimulation (TMS) on motor cortex excitability in individuals who have suffered stroke and to study the influence of the phase of the oscillatory rhythm (mu frequency) on motor excitability in stroke individuals. Read Less

Loss of reading ability due to stroke, called alexia, likely affects over a million Americans at any given time and causes difficulty performing many daily life functions, such as paying bills, using email/text, reading for pleasure, and reading signs in the community. Understanding the brain and cognitive basis of alexia could improve diagnosis and treatment of this important problem. In this study, the investigators will perform a large-scale behavioral and brain imaging study of stroke survivors and typical older adults to improve our understanding of the brain and cognitive basis of reading in both of these groups. Participants will complete a battery of tests of reading, speech, language, and thinking abilities. In addition, some participants will complete an MRI. Sessions will be completed across approximately 2-6 weeks, but may be extended depending on participants' schedules and availability. Some participants will be invited to repeat these procedures once or twice in approximately 3-12 months to monitor for changes in reading abilities and MRI measurements over time. Read Less

Veterans with post-traumatic stress disorder (PTSD) have an increased risk of developing ischemic stroke. Veterans enduring PTSD face difficulties in managing their PTSD severity after suffering from a stroke. Currently, clinical trials in PTSD exclude patients with stroke and patients with significant premorbid psychological conditions like PTSD are usually excluded from stroke clinical trials. Methylphenidate (MPH) is a central nervous system stimulant that can improve PTSD symptoms: avoidance behaviors, social withdrawal, hyperarousal, and working memory. MPH can also improve post-stroke outcomes: mood, activities of daily living, and motor functioning. In clinical trials for PTSD or stroke, MPH has been shown to be well-tolerated with minimal adverse events. The high prevalence of PTSD in Veterans with stroke provides strong justification for development of interventions that effectively and simultaneously target both conditions. The overarching goal of our proposal is to understand how MPH improves PTSD severity in Veterans with comorbid stroke. Read Less

The investigators propose a pilot crossover trial of 2 behavioral language treatments, with randomized order of treatments and blinded assessors, to determine if a therapy designed to stimulate right hemisphere functions (Producing Increasingly Complex Themes Using Right-hemisphere Engagement Implemented with Telemedicine - PICTURE IT; described below) is more effective in improving discourse than a published computer delivered lexical treatment (shown previously to improve naming) in subacute post-stroke aphasia. Read Less

This study aims at comparing manual function outcomes between the standard of care and additional self-administered hand therapy after stroke. Strokes are common neurological injuries, and although rates of survival have increased in recent decades, survivors often continue to experience deficiencies in hand dexterity and bimanual function. Most motor recovery takes place within the first 3 months after a stroke. This initial period is necessary for stabilizing the patient but also provides different opportunities to foster motor recovery. Functional gains, including instances after the post-acute period, have been observed after regular and frequent (high dosage) therapy, suggesting that recovery is likely influenced by practice-driven sensorimotor learning. These findings motivate the implementation of daily therapeutic regimes beyond post-stroke hospitalization and basic motor function, aiming instead at addressing overlooked deficiencies in manipulation and bimanual coordination. While some hand therapy is often provided during outpatient therapy visits (the standard of care), self-administered sessions play a large role in implementing additional daily therapy. As a result, the investigators are interested in both the implementation of self-administered regimes and measuring clinical outcomes with and without self-administered therapy. Read Less

This trial aims to demonstrate that the Neuralert Monitoring System will detect strokes before they would be identified by current standard of care. Each patient will be monitored for up to five days, depending on device connectivity or battery duration. Each monitoring session will consist of wearing a Neuralert device on each arm. For this pilot trial, we are interested in learning about Wi-Fi connectivity, successful data transmission, integration into clinical workflow, usability and tolerability. Read Less

Human development as a species has been strongly associated with the ability to dexterously manipulate objects and tools. Unfortunately, current therapy efforts typically fail to restore fine manual control after stroke. The goal of this study is to evaluate a new intervention that would combine targeted electrical stimulation of selected nerves with use a soft, pneumatically actuated hand exoskeleton to enhance repetitive practice of independent movements of the fingers and thumb in order to improve rehabilitation of hand function after stroke. The investigators will recruit stroke survivors in the subacute phase of recovery (2-18 months post-stroke). These participants will be involved in a 5-week intervention involving 15 training sessions. During these sessions, participants will train independent movement of the digits of the paretic hand. Evaluation of motor control of the paretic hand will occur prior to initiation of training, at the midpoint of the training period, after completion of training, and one month later. Read Less

The investigators have developed a novel robot-guided stretching under intelligent control and combine it with active movement training, which helped increase joint ROM, reduce spasticity and joint stiffness, increase muscle force output, and improve locomotion. However, for stroke survivors with sensorimotor impairment, their peripheral muscle may not sufficiently be recruited. Functional electrical stimulation (FES), has been shown its advantage to activate the peripheral muscles for people with neurological conditions. The investigators thus make a hybrid robot-FES rehabilitation system, combining the advantage of robot and FES technologies for stroke motor recovery. The investigators further would like to translate the technologies from lab to home-based training. Thus, the investigators will conduct a randomized, controlled, primarily home-based clinical trial using an ankle robot alone or combined with functional electrical stimulation (FES) to treat sensorimotor and locomotion impairments post-stroke. Read Less