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Related Concept Videos

Neuroplasticity01:01

Neuroplasticity

2.6K
Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
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Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

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An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
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Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

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A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
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Stroke: Introduction and Types01:29

Stroke: Introduction and Types

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A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...
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Traumatic Brain Injury l: Introduction01:28

Traumatic Brain Injury l: Introduction

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DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...
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Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

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Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this...
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Updated: May 4, 2026

Injection of Hydrogel Biomaterial Scaffolds to The Brain After Stroke
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How Plastic Is the Brain after a Stroke?

Michelle L Starkey1, Martin E Schwab2

  • 1Balgrist University Hospital, University of Zurich, Zurich, Switzerland mstarkey@paralab.balgrist.ch.

The Neuroscientist : a Review Journal Bringing Neurobiology, Neurology and Psychiatry
|January 10, 2014
PubMed
Summary

The brain exhibits significant plasticity after a stroke, allowing for functional recovery through rehabilitation. Factors like lesion characteristics and age influence this neuroplasticity, guiding new therapeutic strategies.

Keywords:
brainperi-infarctplasticityspinal cordstroketraining

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Area of Science:

  • Neuroscience
  • Neurology
  • Rehabilitation Medicine

Background:

  • Stroke is a leading cause of long-term disability, often resulting in severe motor impairments.
  • Current rehabilitation focuses on leveraging the brain's capacity for structural plasticity to regain function.
  • Understanding the brain's adaptability post-stroke is crucial for improving patient outcomes.

Approach:

  • This review examines factors influencing brain plasticity after stroke, including age, lesion size, and location.
  • It highlights the peri-infarct area's role in mechanistically driving plastic changes in cortical circuitry.
  • The review synthesizes preclinical and clinical research on interventions aimed at enhancing recovery.

Key Points:

  • Brain plasticity, the growth of new nerve connections, is a key mechanism in stroke recovery.
  • Lesion characteristics (size, location) and patient age significantly modulate the extent of neuroplasticity.
  • The peri-infarct zone is a critical hub for adaptive changes in neural circuitry.

Conclusions:

  • The brain's plasticity offers a significant therapeutic target for stroke rehabilitation.
  • Further research into factors affecting plasticity and novel interventions can improve functional outcomes.
  • Translating preclinical findings into clinical practice holds promise for enhancing stroke recovery.