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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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The Oscillatory Basis of Working Memory Function and Dysfunction in Epilepsy.

Olivia N Arski1,2, Julia M Young2,3, Mary-Lou Smith2,3,4

  • 1Institute of Medical Science, University of Toronto, Toronto, ON, Canada.

Frontiers in Human Neuroscience
|February 15, 2021
PubMed
Summary
This summary is machine-generated.

Epilepsy frequently causes working memory (WM) problems due to disrupted brain network oscillations. Understanding these neural oscillations offers new targets for treating WM deficits in epilepsy patients.

Keywords:
epilepsyhigh frequency oscillationshippocampusneural networksworking memory

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Area of Science:

  • Neuroscience
  • Epileptology
  • Cognitive Science

Background:

  • Working memory (WM) deficits are common in epilepsy.
  • WM relies on coordinated neural oscillations within large-scale brain networks.
  • Mechanisms linking epilepsy to WM impairments are not fully understood.

Purpose of the Study:

  • To review the role of neural oscillations in WM.
  • To explore how epilepsy disrupts these oscillations and impacts WM.
  • To discuss potential therapeutic targets for WM deficits in epilepsy.

Main Methods:

  • Literature review of studies on neural oscillations, WM, and epilepsy.
  • Analysis of functional network interactions (hippocampus, default mode network, prefrontal cortex, frontoparietal network).
  • Focus on interictal epileptic activity (interictal epileptiform discharges, high frequency oscillations).

Main Results:

  • Neural oscillations are crucial for WM function.
  • Epilepsy disrupts these oscillations, leading to aberrant patterns.
  • Interictal epileptic activity, including HFOs, is specifically implicated in WM deficits.

Conclusions:

  • Aberrant neural oscillations are a key mechanism underlying WM deficits in epilepsy.
  • Understanding these oscillatory disruptions opens avenues for neuromodulation therapies.
  • Targeting oscillatory dysfunction may improve cognitive outcomes in epilepsy.