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Related Concept Videos

Seizures: Classification01:13

Seizures: Classification

Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
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 ll: Types01:19

Seizures ll: Types

Seizures are sudden bursts of abnormal electrical discharge in the brain that interfere with normal function. They are commonly divided into three groups: focal seizures, generalized seizures, and other types that do not fit neatly into either category.Focal SeizuresFocal seizures begin in a single brain region. When awareness is preserved, they are called focal aware seizures and may cause sensations such as tingling, unusual smells, or flashing lights. When awareness is impaired, they are...
Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
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

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Cerebral Ischemic Coma Model Induced by Modified Four-Vessel Occlusion
03:37

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Published on: July 5, 2024

Massive rhythmic axial myoclonus in post-anoxic coma.

Stéphane Legriel1, Yves Roger Tran-Dinh, Nicolas Bele

  • 1Medical Intensive Care Unit, Saint-Louis University Hospital, Paris, France. stlegriel@invivo.edu

Epileptic Disorders : International Epilepsy Journal with Videotape
|September 11, 2008
PubMed
Summary

This video shows a patient experiencing significant rhythmic neck and trunk flexion after anoxic coma. This presentation highlights a rare neurological response to severe brain injury.

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Inducing Post-Traumatic Epilepsy in a Mouse Model of Repetitive Diffuse Traumatic Brain Injury
07:07

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Published on: February 10, 2020

Area of Science:

  • Neurology
  • Neuroscience
  • Critical Care Medicine

Background:

  • Anoxic coma, resulting from oxygen deprivation to the brain, can lead to diverse and severe neurological deficits.
  • Understanding post-anoxic neurological manifestations is crucial for diagnosis and management.

Observation:

  • A patient in post-anoxic coma exhibited massive, impressive rhythmic axial sudden flexion of the neck and upper trunk.
  • This involuntary movement pattern was observed and documented via video.

Findings:

  • The observed rhythmic axial flexion represents a potentially significant, albeit rare, motor phenomenon in the context of severe hypoxic-ischemic brain injury.
  • This specific movement may indicate particular patterns of neuronal dysfunction or disinhibition.

Implications:

  • Further investigation into the mechanisms underlying such rhythmic axial movements is warranted.
  • Documenting and analyzing these phenomena can improve our understanding of post-anoxic brain injury and inform clinical assessment.
  • This case contributes to the literature on unusual post-coma motor stereotypies.