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Related Concept Videos

Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

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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...
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Seizures: Classification01:13

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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:
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Functional Brain Systems: Limbic System01:15

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The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
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Subcortical Structures and Epilepsy.

Aline Herlopian1

  • 1Department of Neurology, Yale Comprehensive Epilepsy Center, Yale School of Medicine, New Haven, Connecticut, USA.

Stereotactic and Functional Neurosurgery
|September 5, 2025
PubMed
Summary
This summary is machine-generated.

Epilepsy involves complex brain networks. Research increasingly shows subcortical structures, like the thalamus, are crucial in seizure activity, shifting focus from solely cortical areas.

Keywords:
Basal gangliaBrainstemCerebellumCorpus callosumEpilepsyHypothalamusSubcortical structureThalamus

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Area of Science:

  • Neuroscience
  • Epileptology
  • Systems Neuroscience

Background:

  • Epilepsy is traditionally viewed as a disorder of cortical circuits.
  • Subcortical structures, beyond the limbic system, are gaining attention for their role in epilepsy.
  • A paradigm shift is occurring towards understanding distributed cortical-subcortical networks.

Purpose of the Study:

  • To review the involvement of various subcortical structures in generalized and focal epilepsies.
  • To highlight the growing evidence for subcortical roles, particularly the thalamus, in seizure dynamics.
  • To advocate for continued research into cortical-subcortical network interactions in epilepsy.

Main Methods:

  • Literature review focusing on neuromodulation studies and network dynamics.
  • Analysis of research on subcortical structures in epilepsy pathophysiology.
  • Synthesis of findings on generalized and focal epilepsy involving cortical-subcortical circuits.

Main Results:

  • Subcortical structures, including the thalamus, are critical nodes in epileptic networks.
  • Neuromodulation studies provide evidence for the significant role of subcortical areas in seizure control.
  • Understanding these networks is essential for advancing epilepsy treatment.

Conclusions:

  • Epilepsy is a network disorder requiring a comprehensive view of cortical-subcortical interactions.
  • Further investigation into these networks promises improved therapeutic strategies and patient outcomes.
  • Targeting subcortical structures may offer new avenues for epilepsy management.