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Related Concept Videos

Tetanus01:29

Tetanus

Tetanus is a life-threatening neurological disorder characterized by persistent muscle contractions and spastic paralysis. It is caused by Clostridium tetani, a motile, Gram-positive, rod-shaped, obligate anaerobe. These bacteria produce terminal endospores, giving them a distinctive “lollipop” or “tennis-racket” appearance. They thrive in anaerobic environments, such as those found in deep puncture wounds.Once introduced into the body, the spores germinate into vegetative cells. These cells...
Botulism01:22

Botulism

Botulism is a life-threatening neuroparalytic condition caused by botulinum neurotoxin, which is produced by the bacterium Clostridium botulinum, a Gram-positive, spore-forming, obligate anaerobe.In adults, the toxin enters the body in different ways: in foodborne botulism, the preformed toxin is absorbed in the intestine. In wound botulism, spores grow in injured tissue and release the toxin into the blood. Infant botulism differs mechanistically from adult forms. In infants, botulism commonly...
Alterations in Muscle Tone ll01:12

Alterations in Muscle Tone ll

Alterations in muscle tone are common manifestations of neurological disorders and reflect dysfunction within different nervous system regions. Spasticity, paratonia, and dystonia represent distinct forms of hypertonia, each with unique mechanisms, clinical features, and diagnostic importance.CharacteristicsSpasticity happens from upper motor neuron lesions and is characterized by velocity-dependent resistance to passive movement. Clinical features include:Exaggerated deep tendon reflexesClonus...
Alterations in Muscle Tone lll01:11

Alterations in Muscle Tone lll

Rigidity and myotonia are distinct abnormalities of muscle tone that affect resistance and relaxation during movement. Although both involve altered muscle contraction, they arise from different neurological and muscular mechanisms.CharacteristicsRigidity is characterized by uniform resistance to passive movement across the entire range, independent of speed, affecting flexors and extensors equally. It may appear as lead-pipe rigidity (smooth, constant resistance) or cogwheel rigidity...
Seizures l: Introduction01:20

Seizures l: Introduction

Understanding seizures and epilepsy relies on key definitions that help in recognizing, classifying, and managing these disorders. These definitions provide a framework for recognizing, classifying, and managing seizure disorders.DefinitionsA seizure is a sudden, abnormal burst of electrical activity in the brain that can cause changes in awareness, movement, sensation, or behavior, depending on the area involved. Epilepsy is a chronic condition characterized by recurrent, unprovoked seizures,...

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Related Experiment Video

Updated: Jun 8, 2026

Brain Death Induction in Mice Using Intra-Arterial Blood Pressure Monitoring and Ventilation via Tracheostomy
05:03

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Published on: April 17, 2020

Fasciculations in brain death.

Yesim Yetimalar Beckmann1, Yeliz Ciftçi, Yaprak Seçil

  • 1Department of Neurology, Atatürk Training and Research Hospital, İzmir, Turkey. ybeckmann@gmail.com

Critical Care Medicine
|October 5, 2010
PubMed
Summary

This study documents rare, extensive fasciculations in a brain-dead patient, suggesting these motor movements should be recognized as symptoms of brain death.

Area of Science:

  • Neurology
  • Clinical Neuroscience

Background:

  • Brain death signifies irreversible cessation of all brain functions.
  • While some motor movements are known in brain death, unusual presentations warrant investigation.

Observation:

  • This report details a brain-dead patient exhibiting extensive and prolonged fasciculations.
  • Motor movements were meticulously videotaped for comprehensive analysis.

Findings:

  • The patient met all established criteria for brain death.
  • The observed fasciculations were rare, extensive, and long-lasting.

Implications:

  • Fasciculations should be considered a potential motor symptom in brain death diagnosis.
  • This finding may refine our understanding of neurological activity post-cessation.

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