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Related Concept Videos

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...
Lateralization01:28

Lateralization

Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
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 12, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
06:01

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Published on: August 18, 2015

Transient alien limb phenomenon in right frontoparietal infarction.

Samhita Panda1

  • 1Department of Neurology, St. Stephen's Hospital, Delhi, India. samhitapanda@yahoo.com

Neurology India
|May 29, 2010
PubMed
Summary

Transient alien hand phenomenon, a rare neurological condition, was observed. This case presents an unusual, temporary manifestation of alien limb syndrome, differing from its typically persistent nature.

Area of Science:

  • Neurology
  • Neuroscience
  • Clinical Neurology

Background:

  • Alien limb phenomenon (ALP) is a rare neurological disorder.
  • It is commonly linked to stroke, corticobasal degeneration, and corpus callosum involvement.
  • Frontal lobe or posterior cerebral artery territory lesions can also cause ALP.

Observation:

  • This report details an unusual case of alien limb phenomenon.
  • The observed case exhibited a transient, or temporary, form of the condition.
  • This presentation is atypical as ALP is typically persistent.

Findings:

  • The study highlights a rare instance of transient alien hand phenomenon.
  • This challenges the general understanding of alien limb phenomenon as a persistent disorder.

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  • The case underscores the diverse clinical presentations of neurological disorders affecting motor control.

    • Implications:

    • This case expands the differential diagnosis for alien limb phenomenon.
    • It suggests that transient ALP may occur, requiring consideration in clinical assessments.
    • Further research into the neurobiological underpinnings of transient ALP is warranted.