Chronic Stroke
Chronic Stroke - Related Videos
10:15
Utilizing Repetitive Transcranial Magnetic Stimulation to Improve Language Function in Stroke Patients with Chronic Non-fluent Aphasia
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Cited by 16 •
2013
We explore the use of repetitive transcranial magnetic stimulation (rTMS) to improve language abilities in patients with chronic stroke and non-fluent aphasia. After identifying a site in the right frontal gyrus for each patient that responds optimally to stimulation, we target this site during ten days of rTMS treatment.
03:55
A Flexible Wearable Supernumerary Robotic Limb for Chronic Stroke Patients
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Cited by 4 •
2023
This protocol introduces a flexible wearable supernumerary robotic limb tailored to assist in finger rehabilitation for stroke patients. The design incorporates a bending sensor to facilitate seamless human-robot interaction. Validation through experiments involving both healthy volunteers and stroke patients underscores the efficacy and dependability of the proposed study.
06:37
Electroencephalography Network Indices as Biomarkers of Upper Limb Impairment in Chronic Stroke
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2023
The experimental protocol demonstrates the paradigm for acquiring and analyzing electroencephalography (EEG) signals during upper limb movement in individuals with stroke. The alteration of the functional network of low-beta EEG frequency bands was observed during the movement of the impaired upper limb and was associated with the degree of motor impairment.
08:14
Modeling Stroke in Mice: Permanent Coagulation of the Distal Middle Cerebral Artery
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Cited by 104 •
2014
Various murine models of middle cerebral artery occlusion (MCAO) are widely used in experimental brain research. Here, we demonstrate the model of transcranial permanent distal MCAO which produces consistent cortical infarction of a size corresponding to damage imposed by the majority of human ischemic strokes.
06:38
The Stroke Preclinical Assessment Network Multi-Laboratory Model of Thromboembolic Stroke with Thrombolysis: TE-MCAo
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2025
To simulate thromboembolic stroke, emboli prepared from heterologous rat blood were injected into the middle cerebral artery, followed by administration of systemic thrombolysis for recanalization. This version of the model is optimized for use in a multi-laboratory network and supports testing multiple candidate therapeutics.
FAQs
Neural plasticity in chronic stroke is reflected in altered synaptic connections and reorganized motor networks. These changes can allow surviving circuits to support function even when damaged tissue does not recover. Studying this relationship helps explain why improvement may persist long after medical stabilization and guides rehabilitation toward activity that strengthens usable network function.
Compensatory brain activity reflects the ability of surviving networks to support a task after the original neural pathways have been disrupted. This differs from assuming that the damaged tissue has returned to its prior state. Identifying compensation helps researchers interpret functional gains and determine how rehabilitation recruits alternative patterns of brain activity.
These components operate at different levels of movement: synaptic changes affect communication between neurons, motor networks coordinate neural commands, and muscle control determines their physical expression. Examining them together connects brain-level changes with observable impairment. This integrated view helps neuroscience studies relate behavioral performance to the mechanisms underlying persistent movement limitations.
Differences in the neural tissue affected and in subsequent network changes can produce distinct patterns of impairment. Movement, sensation, language, and cognition may be limited in different combinations, while altered muscle control can further affect performance. This variability is why chronic stroke research uses both behavioral assessment and measures of brain activity.
Behavioral assessment documents what a person can do, including persistent limitations in movement, sensation, language, or cognition. Neuroimaging adds information about activity in surviving and compensating networks. Used together, these approaches connect measurable performance with neural organization, helping researchers evaluate recovery and investigate which brain systems support function over time.
These approaches are used when researchers want to examine or improve lasting function after the initial injury and stabilization. Task-specific training targets relevant activities, robotics provides a technology-based rehabilitation approach, and neuromodulation examines whether changing neural activity can support recovery. Their use links rehabilitation outcomes with broader questions about plasticity and network function.