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Related Concept Videos

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: 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 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 29, 2026

Electroporation of the Hindbrain to Trace Axonal Trajectories and Synaptic Targets in the Chick Embryo
10:04

Electroporation of the Hindbrain to Trace Axonal Trajectories and Synaptic Targets in the Chick Embryo

Published on: May 29, 2013

Recurrent nonstatus generalized seizures alter the developing chicken brain.

Zhao Gong1, André Obenaus, Nan Li

  • 1Biomedical Engineering Division, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.

Epilepsia
|November 26, 2003
PubMed
Summary
This summary is machine-generated.

Repetitive seizures in epileptic chickens altered brain development, reducing brain volume and apparent diffusion coefficient (ADC) values in key brain regions. This study shows recurrent seizures modify the brain matrix.

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Preparation and Implantation of Electrodes for Electrically Kindling VGAT-Cre Mice to Generate a Model for Temporal Lobe Epilepsy
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Last Updated: Jun 29, 2026

Electroporation of the Hindbrain to Trace Axonal Trajectories and Synaptic Targets in the Chick Embryo
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Preparation and Implantation of Electrodes for Electrically Kindling VGAT-Cre Mice to Generate a Model for Temporal Lobe Epilepsy
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Published on: August 17, 2021

Area of Science:

  • Neuroscience
  • Comparative Pathology
  • Animal Models

Background:

  • Epilepsy is a neurological disorder characterized by recurrent seizures.
  • Understanding seizure-induced brain pathology is crucial for developing effective treatments.
  • Animal models are essential for studying the effects of seizures on brain development.

Purpose of the Study:

  • To assess seizure-induced pathology in epileptic, carrier, and normal chickens using noninvasive magnetic resonance imaging.
  • To determine if repetitive seizures in an epileptic fowl model alter brain development.

Main Methods:

  • Noninvasive magnetic resonance imaging (MRI) was employed.
  • Data were collected from seizure and control groups at 45, 90, and 180 days post-hatching.
  • Apparent diffusion coefficient (ADC) values and brain volumes were analyzed.

Main Results:

  • Reduced ADC values were observed in the optic tectum and archistriatum of stimulated epileptic chicks at 180 days.
  • ADC values remained unchanged in nonstimulated control groups.
  • Epileptic chickens from the stimulated group exhibited smaller mean brain volumes at 90 and 180 days compared to nonstimulated controls.

Conclusions:

  • Recurrent seizures were demonstrated to modify the brain matrix in a fowl model.
  • These findings highlight the impact of seizures on brain development and structure.
  • The study provides insights into the neuropathological consequences of epilepsy.