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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,...
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 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...
Antiepileptic Drugs: Sodium Channel Blockers01:08

Antiepileptic Drugs: Sodium Channel Blockers

Antiepileptic drugs are specialized medications that prevent seizures in individuals diagnosed with epilepsy. These drugs primarily function by blocking the movement of sodium ions through channels in the neuronal membrane, inhibiting the repetitive firing of action potentials often associated with seizures.
Sodium channel blockers modulate ion channels, particularly voltage-gated sodium channels. They block only sodium ion movement.
Among the most commonly prescribed antiepileptic drugs are...
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: Calcium Channel Blockers01:17

Antiepileptic Drugs: Calcium Channel Blockers

Calcium channel blockers, a class of antiepileptic drugs, regulate the flow of calcium ions within neurons.
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...

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Related Experiment Video

Updated: Jul 5, 2026

Electrophoretic Delivery of γ-aminobutyric Acid (GABA) into Epileptic Focus Prevents Seizures in Mice
07:01

Electrophoretic Delivery of γ-aminobutyric Acid (GABA) into Epileptic Focus Prevents Seizures in Mice

Published on: May 16, 2019

How do seizures stop?

Fred A Lado1, Solomon L Moshé

  • 1The Saul R. Korey Department of Neurology, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, New York, NY 10461, USA. flado@montefiore.org

Epilepsia
|May 28, 2008
PubMed
Summary

Understanding seizure termination is key for developing new epilepsy treatments. This review explores mechanisms from neuronal membranes to brain circuits, aiding anticonvulsant drug discovery.

Area of Science:

  • Neuroscience
  • Epilepsy Research
  • Pharmacology

Background:

  • Seizure termination is crucial for returning to normal brain activity.
  • Understanding termination mechanisms can reveal new anticonvulsant drug targets.
  • Current research often focuses more on seizure initiation than termination.

Purpose of the Study:

  • To review known and potential physiological mechanisms of seizure termination.
  • To organize these mechanisms by neuroanatomical scale (membranes, synapses, networks, circuits).
  • To stimulate novel epilepsy research and improve patient care.

Main Methods:

  • Literature review of physiological mechanisms of seizure termination.
  • Categorization of mechanisms by increasing neuroanatomical distance: membranes, synapses, networks, and circuits.

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High-Quality Seizure-Like Activity from Acute Brain Slices Using a Complementary Metal-Oxide-Semiconductor High-Density Microelectrode Array System
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High-Quality Seizure-Like Activity from Acute Brain Slices Using a Complementary Metal-Oxide-Semiconductor High-Density Microelectrode Array System

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Last Updated: Jul 5, 2026

Electrophoretic Delivery of γ-aminobutyric Acid (GABA) into Epileptic Focus Prevents Seizures in Mice
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06:28

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Published on: September 27, 2024

  • Discussion of mechanisms at the seizure onset zone and broader brain nuclei like the substantia nigra pars reticulata (SNR).

    • Main Results:

    • Mechanisms of seizure termination operate at multiple scales, from individual neuronal membranes to large brain circuits.
    • Specific examples include membrane excitability changes, synaptic inhibition, network oscillations, and modulation by brain nuclei (e.g., SNR).
    • The review synthesizes existing knowledge and proposes areas for future investigation.

    Conclusions:

    • Seizure termination involves a complex interplay of mechanisms across different neuroanatomical levels.
    • Further research into these mechanisms is vital for developing effective anticonvulsant therapies.
    • A comprehensive understanding of seizure termination can significantly advance epilepsy research and clinical management.