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Related Concept Videos

Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

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...
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

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...
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...
Stroke: Introduction and Types01:29

Stroke: Introduction and Types

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...
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...

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Related Experiment Video

Updated: May 24, 2026

A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats
04:38

A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats

Published on: May 22, 2019

Mood disorders after stroke.

Antonio Carota1, Julien Bogousslavsky

  • 1Hildebrand Clinic, Rehabilitation Center, Brissago, Switzerland. a.carota@bluewin.ch

Frontiers of Neurology and Neuroscience
|March 2, 2012
PubMed
Summary
This summary is machine-generated.

Mood disorders after stroke significantly impact patients and caregivers. Further research is needed to understand the complex links between depression, anxiety, brain changes, and psychological factors following a stroke.

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Gathering Self-Initiated Rat Behavioral Data to Characterize Post-Stroke Deficits
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Gathering Self-Initiated Rat Behavioral Data to Characterize Post-Stroke Deficits

Published on: March 15, 2024

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Last Updated: May 24, 2026

A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats
04:38

A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats

Published on: May 22, 2019

Gathering Self-Initiated Rat Behavioral Data to Characterize Post-Stroke Deficits
05:08

Gathering Self-Initiated Rat Behavioral Data to Characterize Post-Stroke Deficits

Published on: March 15, 2024

Area of Science:

  • Neurology
  • Psychiatry
  • Public Health

Background:

  • Mood disorders are frequent and impactful after stroke, affecting patient quality of life.
  • Manic symptoms are rare but linked to specific right-hemisphere stroke locations.
  • The relationship between post-stroke depression/anxiety, brain circuitry, and psychological factors remains unclear.

Purpose of the Study:

  • To investigate the complex associations within post-stroke mood disorders.
  • To clarify the links between brain circuitries, clinical presentation, and psychological factors.
  • To address the need for systematic replication in stroke mood disorder research.

Main Methods:

  • The study involves analyzing multiple variables related to mood disorders post-stroke.
  • Methodological challenges due to numerous factors are acknowledged.
  • Focus on disentangling the connections between depression, anxiety, and neurological/psychological elements.

Main Results:

  • The precise links between post-stroke depression and anxiety, brain circuitries, clinical signs, and psychological factors are not yet fully understood.
  • The complexity of these factors presents significant methodological difficulties.
  • Existing study findings lack consistent replication.

Conclusions:

  • Post-stroke mood disorders require further investigation due to their prevalence and impact.
  • Understanding these disorders may offer insights into mood disorders without brain lesions.
  • There is a critical need for continued research in stroke medicine concerning mood disturbances.