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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:
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.
Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
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,...
Antiepileptic Drugs: Glutamate Antagonists01:14

Antiepileptic Drugs: Glutamate Antagonists

Glutamate is a fundamental neurotransmitter in the central nervous system, playing a vital role in neuronal communication and various cognitive processes. Glutamate stands as the principal excitatory neurotransmitter in the brain. Its presence is crucial for the communication between neurons, underpinning essential processes such as synaptic transmission, neuronal excitability, and plasticity. These functions are vital for higher-order cognitive processes, including learning and memory. The...

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Related Experiment Video

Updated: Jun 6, 2026

Preparing Undercut Model of Posttraumatic Epileptogenesis in Rodents
07:58

Preparing Undercut Model of Posttraumatic Epileptogenesis in Rodents

Published on: September 15, 2011

Neocortical posttraumatic epileptogenesis.

David A Prince1, Isabel Parada, Huifang Li

  • 1Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, California, U.S.A.

Epilepsia
|December 17, 2010
PubMed
Summary
This summary is machine-generated.

New excitatory connections and reduced inhibitory signaling contribute to post-traumatic epilepsy. Interventions targeting these changes before seizure onset show promise for preventing epilepsy after brain injury.

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Related Experiment Videos

Last Updated: Jun 6, 2026

Preparing Undercut Model of Posttraumatic Epileptogenesis in Rodents
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Published on: September 15, 2011

Inducing Post-Traumatic Epilepsy in a Mouse Model of Repetitive Diffuse Traumatic Brain Injury
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Use of a Wireless Video-EEG System to Monitor Epileptiform Discharges Following Lateral Fluid-Percussion Induced Traumatic Brain Injury
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Use of a Wireless Video-EEG System to Monitor Epileptiform Discharges Following Lateral Fluid-Percussion Induced Traumatic Brain Injury

Published on: June 21, 2019

Area of Science:

  • Neuroscience
  • Epileptology
  • Traumatic Brain Injury

Background:

  • Post-traumatic epilepsy (PTE) arises from complex changes in brain circuitry following injury.
  • Key mechanisms involve increased excitatory neurotransmission and decreased inhibitory neurotransmission, particularly involving gamma-aminobutyric acid (GABA).

Purpose of the Study:

  • To investigate the role of excitatory and inhibitory balance in epileptogenesis after trauma.
  • To explore the potential of therapeutic interventions targeting these mechanisms for epilepsy prophylaxis.

Main Methods:

  • Utilized animal models of post-traumatic epileptogenesis.
  • Examined changes in excitatory connectivity and GABAergic inhibition.
  • Applied experimental strategies between the time of trauma and seizure onset.

Main Results:

  • Demonstrated that increased excitatory connectivity and decreased GABAergic inhibition are critical for developing post-traumatic epilepsy.
  • Showcased that interventions interfering with these neurobiological alterations can prevent seizure development in laboratory settings.

Conclusions:

  • Targeting the imbalance between excitation and inhibition holds promise for preventing epileptogenesis after cortical injuries.
  • These findings support the development of prophylactic treatments for individuals at risk of developing epilepsy post-trauma.