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Related Concept Videos

Stroke: Introduction and Types01:29

Stroke: Introduction and Types

55
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...
55
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

44
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.
44
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

54
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...
54
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

20
A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
20
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

30
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...
30

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Updated: May 3, 2026

Compensatory Limb Use and Behavioral Assessment of Motor Skill Learning Following Sensorimotor Cortex Injury in a Mouse Model of Ischemic Stroke
08:01

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Poststroke Impulsivity: A Narrative Review.

Melissa B Jones1, Dakota E Broadway1, Malena Gimenez-Zapiola1

  • 1Mental Health and Research Care Lines, Michael E. DeBakey Veterans Affairs (VA) Medical Center, Houston, and Beth K. and Stuart C. Yudofsky Division of Neuropsychiatry, Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston.

The Journal of Neuropsychiatry and Clinical Neurosciences
|February 18, 2025
PubMed
Summary
This summary is machine-generated.

Impulsivity after stroke presents in various ways, affecting emotional and behavioral regulation. Further research is needed to define and treat these complex post-stroke symptoms.

Keywords:
Cerebrovascular diseaseImpulse control disorderImpulsivity treatmentsNeuropsychiatric diagnosisPoststroke impulsivityStroke rehabilitation

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Area of Science:

  • Neuroscience
  • Neurology
  • Psychiatry

Background:

  • Impulsivity is a complex behavior impacting emotional and behavioral regulation.
  • Cerebrovascular injury (stroke) can lead to diverse neurological and psychological deficits.
  • Understanding post-stroke impulsivity is crucial for patient care and rehabilitation.

Purpose of the Study:

  • To review the multidimensional nature and presentations of impulsivity following stroke.
  • To examine the literature on assessments, outcomes, and treatments for post-stroke impulsivity.
  • To explore the relationship between post-stroke impulsivity and neurobehavioral syndromes.

Main Methods:

  • Narrative review of existing literature.
  • Analysis of case reports on post-stroke impulsivity.
  • Examination of psychiatric nomenclature and neurobehavioral syndromes.

Main Results:

  • Post-stroke impulsivity manifests as immediate responses, impaired delayed gratification, and poor regulation.
  • Impulsivity can present in syndromes like alien hand syndrome and atypical impulse control disorders.
  • Impulse control disorders are rare after stroke, and therapeutic approaches require more evidence.

Conclusions:

  • Post-stroke impulsivity is a multifaceted issue requiring clearer definitions.
  • Integration with psychiatric nomenclature is needed for better classification.
  • Further evidence-based therapeutic strategies are essential for managing post-stroke impulsivity.