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Related Concept Videos

Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

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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Related Experiment Video

Updated: Jun 8, 2026

Neurobehavioral Assessments in a Mouse Model of Neonatal Hypoxic-ischemic Brain Injury
08:32

Neurobehavioral Assessments in a Mouse Model of Neonatal Hypoxic-ischemic Brain Injury

Published on: November 24, 2017

An enriched environment improves sensorimotor function post-ischemic stroke.

Heidi Janssen1, Julie Bernhardt, Janice M Collier

  • 1Hunter Stroke Service, Hunter New England Health, New South Wales, Australia. Heidi.Janssen@hnehealth.nsw.gov.au

Neurorehabilitation and Neural Repair
|September 14, 2010
PubMed
Summary
This summary is machine-generated.

Enriched environments (EE) significantly improve neurobehavioral scores and learning in animal stroke models. However, EE also led to a slight increase in infarct size, warranting further investigation for clinical applications in stroke rehabilitation.

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Last Updated: Jun 8, 2026

Neurobehavioral Assessments in a Mouse Model of Neonatal Hypoxic-ischemic Brain Injury
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Compensatory Limb Use and Behavioral Assessment of Motor Skill Learning Following Sensorimotor Cortex Injury in a Mouse Model of Ischemic Stroke
08:01

Compensatory Limb Use and Behavioral Assessment of Motor Skill Learning Following Sensorimotor Cortex Injury in a Mouse Model of Ischemic Stroke

Published on: July 10, 2014

Area of Science:

  • Neuroscience
  • Stroke Research
  • Animal Models

Background:

  • Enriched environments (EE) offer enhanced sensory, cognitive, motor, and social stimulation compared to standard conditions.
  • The efficacy of EE in animal models of ischemic stroke remains debated despite numerous studies.

Purpose of the Study:

  • To systematically review and meta-analyze the effects of EE on neurobehavioral outcomes, learning, infarct size, and mortality in experimental stroke models.

Main Methods:

  • A systematic review of controlled studies investigating EE in experimental stroke.
  • Meta-analysis using weighted mean difference and random effects standardized methods for neurobehavioral scores.

Main Results:

  • Animals in EE showed significantly improved mean neurobehavioral scores (0.9 SD above controls, P < .001).
  • A trend towards improved learning was observed (25.1% improvement, P = .02).
  • EE was associated with a small but significant increase in infarct size (8.0%, P = .015) without increasing mortality.

Conclusions:

  • EE significantly enhances sensorimotor function and learning post-stroke in animal models.
  • A slight increase in infarct volume was noted, requiring further mechanistic studies.
  • Observed functional improvements highlight the potential of EE for clinical stroke rehabilitation trials.