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Related Concept Videos

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,...
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:
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...
Hepatic Encephalopathy01:29

Hepatic Encephalopathy

DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic shunting—including...
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...

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Related Experiment Video

Updated: Jul 5, 2026

The Pilocarpine Model of Temporal Lobe Epilepsy and EEG Monitoring Using Radiotelemetry System in Mice
10:08

The Pilocarpine Model of Temporal Lobe Epilepsy and EEG Monitoring Using Radiotelemetry System in Mice

Published on: February 27, 2018

Helicopter mishap attributed to single seizure.

Esan Simon1, Darron Watts, Bruce K Bohnker

  • 1Stephen C. Pugh Memorial Clinic, Coast Guard Support Center, Elizabeth City, NC 27909, USA.

Military Medicine
|April 19, 2008
PubMed
Summary

A U.S. Coast Guard aviator experienced a seizure, causing a helicopter ground mishap. This case highlights the possibility of aviation incidents despite rigorous screening for seizure risk factors.

Area of Science:

  • Neurology
  • Aviation Medicine
  • Aerospace Safety

Background:

  • Military aviation personnel undergo strict screening for neurological conditions like seizures.
  • Despite screening, rare occurrences of seizures in aviators can pose significant risks.

Observation:

  • A 36-year-old U.S. Coast Guard aviator had a seizure while on the ground operating a helicopter.
  • The seizure resulted in loss of consciousness and a ground mishap due to unintended cyclic control input.

Findings:

  • Extensive neurological workup revealed no identifiable risk factors for the seizure.
  • This case demonstrates that seizures can occur unexpectedly in aviation personnel.

Implications:

  • Current military aviation guidelines for seizure management require review.

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Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice

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Related Experiment Videos

Last Updated: Jul 5, 2026

The Pilocarpine Model of Temporal Lobe Epilepsy and EEG Monitoring Using Radiotelemetry System in Mice
10:08

The Pilocarpine Model of Temporal Lobe Epilepsy and EEG Monitoring Using Radiotelemetry System in Mice

Published on: February 27, 2018

Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice
09:29

Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice

Published on: June 11, 2020

  • Even with careful surveillance, seizures can lead to aircraft mishaps, emphasizing the need for updated protocols and treatment considerations.