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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:
Antiepileptic Drugs: GABAergic Pathway Potentiators01:18

Antiepileptic Drugs: GABAergic Pathway Potentiators

γ-aminobutyric acid or GABA, plays a pivotal role as an inhibitory neurotransmitter in the brain. GABA pathway potentiators, also known as GABAergic drugs, are a class of pharmaceutical agents designed to enhance the functioning of the GABAergic system. These medications primarily treat epilepsy, a neurological disorder characterized by recurrent seizures.
The key GABA pathway potentiators used in epilepsy management are as follows.
Benzodiazepines are a well-known class of drugs used for their...
Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
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,...
Epilepsy ll: Types01:22

Epilepsy ll: Types

Recurrent seizures, stemming from abnormal electrical activity in the brain, are the defining characteristic of epilepsy, a chronic neurological condition. Because seizure features vary greatly, epilepsy is classified using two systems: by seizure type and by epilepsy syndromes. These classifications enable clinicians to describe seizure patterns and select suitable treatment strategies.I. Classification by Seizure Type1. Focal EpilepsyFocal epilepsy begins in one hemisphere of the brain.

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Sleep dysfunction following neonatal ischemic seizures are differential by neonatal age of insult as determined by qEEG in a mouse model.

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Related Experiment Video

Updated: May 16, 2026

Preparing Undercut Model of Posttraumatic Epileptogenesis in Rodents
07:58

Preparing Undercut Model of Posttraumatic Epileptogenesis in Rodents

Published on: September 15, 2011

Developmental aspects of epileptogenesis

M V Johnston1

  • 1Department of Neurology and Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.

Epilepsia
|January 1, 1996
PubMed
Summary

The developing brain

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Epileptology

Background:

  • The immature brain exhibits unique neurobiological characteristics that influence seizure susceptibility.
  • Features such as increased synaptic density and enhanced plasticity may predispose the developing brain to epilepsy.

Purpose of the Study:

  • To explore the developmental factors contributing to the heightened risk of seizures and epilepsy in the immature brain.
  • To elucidate the neurobiological mechanisms underlying epileptogenesis during brain development.

Main Methods:

  • Review of existing literature on developmental neurobiology and epileptogenesis.
  • Analysis of molecular and cellular mechanisms involved in synaptic plasticity and neuronal excitability in the developing brain.

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Pentylenetetrazole-Induced Kindling Mouse Model

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A Model of Epileptogenesis in Rhinal Cortex-Hippocampus Organotypic Slice Cultures
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A Model of Epileptogenesis in Rhinal Cortex-Hippocampus Organotypic Slice Cultures

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Related Experiment Videos

Last Updated: May 16, 2026

Preparing Undercut Model of Posttraumatic Epileptogenesis in Rodents
07:58

Preparing Undercut Model of Posttraumatic Epileptogenesis in Rodents

Published on: September 15, 2011

Pentylenetetrazole-Induced Kindling Mouse Model
07:06

Pentylenetetrazole-Induced Kindling Mouse Model

Published on: June 12, 2018

A Model of Epileptogenesis in Rhinal Cortex-Hippocampus Organotypic Slice Cultures
10:05

A Model of Epileptogenesis in Rhinal Cortex-Hippocampus Organotypic Slice Cultures

Published on: March 18, 2021

Main Results:

  • The immature brain possesses a higher density of synapses, gap junctions, and excitatory amino acid receptors.
  • Enhanced regenerative responses and robust long-term potentiation (LTP) in the developing brain can promote abnormal connections and epileptogenesis.
  • Age-related enhancement of N-methyl-D-aspartate-type glutamate receptors contributes to increased synaptic plasticity and excitability.

Conclusions:

  • Normal developmental features of synaptic development render the immature brain more excitable than the adult brain.
  • These developmental characteristics are significant contributors to the propensity for developing epilepsy in children.