Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

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...
The Role of Ion Channels in Neuronal Computation01:19

The Role of Ion Channels in Neuronal Computation

A postsynaptic neuron usually receives numerous impulses from several other presynaptic neurons. The axon hillock of the postsynaptic neuron integrates all these signals and determines the likelihood of firing an action potential.
Sometimes a single EPSP is strong enough to induce an action potential in the postsynaptic neuron. However, multiple presynaptic inputs must often create EPSPs around the same time for the postsynaptic neuron to be sufficiently depolarized to fire an action potential.
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.
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...
Voltage-gated Ion Channels01:26

Voltage-gated Ion Channels

Voltage-gated ion channels are transmembrane proteins that open and close in response to changes in the membrane potential. They are present on the membranes of all electrically excitable cells such as neurons, heart, and muscle cells.
Generally, all voltage-gated ion channels have a 'voltage-sensing domain' that spans the lipid bilayer. The charged residues in the sensor move in response to the membrane potential changes that open the channel allowing ions movement. There are several types of...
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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A wearable biomechanical system for medical evaluation of soft tissue disorders.

Science advances·2026
Same author

Author Correction: Curing the brain: in search for new astrocyte-specific therapies.

Experimental & molecular medicine·2026
Same author

Curing the brain: in search for new astrocyte-specific therapies.

Experimental & molecular medicine·2026
Same author

Responses of Carbon Nanotube/Polydimethylsiloxane Composite-Based Soft Resistive and Capacitive Strain Sensors Under Fast, Dynamic Loads.

Soft robotics·2026
Same author

Juvenile-to-adult refinement of thalamic reticular circuits via LRRTM3 enables high-resolution sensory encoding.

Neuron·2026
Same author

Microglial VRK2 Regulates Astrocytic GABA Synthesis and Tonic Inhibition in the Thalamus.

Glia·2025

Related Experiment Video

Updated: May 14, 2026

Generation of Local CA1 γ Oscillations by Tetanic Stimulation
08:02

Generation of Local CA1 γ Oscillations by Tetanic Stimulation

Published on: August 14, 2015

T-type Ca²⁺ channels in absence epilepsy.

Eunji Cheong1, Hee-Sup Shin

  • 1Department of Biotechnology, Translational Research Center for Protein Function Control, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea.

Biochimica Et Biophysica Acta
|February 19, 2013
PubMed
Summary

T-type calcium channels in thalamocortical (TC) neurons are crucial for absence seizures, unlike those in thalamic reticular nuclei (TRN), which remain debated. Understanding these differences can help develop targeted therapies for seizures with fewer side effects.

More Related Videos

GABA-activated Single-channel and Tonic Currents in Rat Brain Slices
09:59

GABA-activated Single-channel and Tonic Currents in Rat Brain Slices

Published on: July 17, 2011

Direct-current Stimulation and Multi-electrode Array Recording of Seizure-like Activity in Mice Brain Slice Preparation
09:39

Direct-current Stimulation and Multi-electrode Array Recording of Seizure-like Activity in Mice Brain Slice Preparation

Published on: June 7, 2016

Related Experiment Videos

Last Updated: May 14, 2026

Generation of Local CA1 γ Oscillations by Tetanic Stimulation
08:02

Generation of Local CA1 γ Oscillations by Tetanic Stimulation

Published on: August 14, 2015

GABA-activated Single-channel and Tonic Currents in Rat Brain Slices
09:59

GABA-activated Single-channel and Tonic Currents in Rat Brain Slices

Published on: July 17, 2011

Direct-current Stimulation and Multi-electrode Array Recording of Seizure-like Activity in Mice Brain Slice Preparation
09:39

Direct-current Stimulation and Multi-electrode Array Recording of Seizure-like Activity in Mice Brain Slice Preparation

Published on: June 7, 2016

Area of Science:

  • Neuroscience
  • Channelopathies
  • Epilepsy Research

Background:

  • Low-voltage-activated T-type Ca²⁺ channels are abundant in the thalamocortical circuit.
  • These channels are implicated in synchronizing neural activity, particularly burst firing.

Purpose of the Study:

  • To review recent studies on the differential roles of T-type Ca²⁺ channels in thalamic reticular nuclei (TRN) and thalamocortical (TC) neurons.
  • To clarify the contribution of T-type channels in TRN and TC neurons to thalamocortical oscillations, sleep spindles, and spike-wave discharges (SWDs).

Main Methods:

  • Review of recent scientific literature and studies.
  • Analysis of the role of T-type channels in TRN and TC neurons in various neurological models.

Main Results:

  • Both TRN and TC nuclei are necessary for thalamocortical oscillations.
  • T-type channels in TC neurons are essential for SWD generation.
  • The role of T-type channels in TRN neurons for SWD generation is controversial, particularly in GABAb-induced absence seizures.

Conclusions:

  • The contribution of T-type channels to TRN and TC neurons is unequal in generating sleep spindles and SWDs.
  • Targeting T-type channel subtypes in TC neurons may offer therapeutic benefits for absence seizures.
  • Further understanding is needed to minimize side effects on physiological thalamocortical oscillations.