Related Experiment Video

Updated: Aug 8, 2026

Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex
09:00

Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex

Published on: April 15, 2015

[Relation of circulating immunocomplexes and epileptic discharges in the electroencephalograms (EEG) of epileptic

J Yang1

  • 1Neurological Research Unit, Affiliated Hospital of Qingdao Medical College.

Zhonghua Shen Jing Jing Shen Ke Za Zhi = Chinese Journal of Neurology and Psychiatry
|June 1, 1990
PubMed

Insights

Circulating immune complexes (CIC) levels correlate with epileptic discharges in EEG. High CIC levels appear with brain activity, decreasing when EEG shows no epileptic activity, suggesting a link to seizure-related brain changes.

Area of Science:

  • Neurology
  • Immunology
  • Neurophysiology

Context:

  • Epilepsy is a chronic neurological disorder characterized by recurrent seizures.
  • Circulating immune complexes (CIC) are implicated in various inflammatory and autoimmune conditions.
  • The relationship between EEG findings and CIC levels in epilepsy requires further elucidation.

Purpose:

  • To investigate the correlation between electroencephalogram (EEG) manifestations and circulating immune complexes (CIC) levels in epileptic patients.
  • To determine if CIC levels fluctuate with the presence or absence of epileptic discharges on EEG.
  • To explore potential mechanisms linking epileptic activity to changes in CIC.

Summary:

  • A study of 160 epileptic patients revealed a significant positive correlation between EEG-identified epileptic discharges and elevated CIC levels (P < 0.01).
  • CIC levels were found to be higher during periods of observed epileptic discharges and decreased when discharges were absent in the same patient.
  • No significant relationship was observed between CIC levels and factors such as sex, age, seizure type, attack frequency, treatment, or time since the last seizure.

Impact:

  • Findings suggest that elevated CIC levels may serve as a biomarker for active epileptic discharges.
  • The study proposes that brain-specific antigens released during epileptic discharges may breach the blood-brain barrier, leading to increased CIC formation.
  • This research opens avenues for understanding the immune system's role in epilepsy pathophysiology and potential therapeutic targets.

More Related Videos

Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy10:22

Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy

Published on: December 6, 2016

Equipment Setup and Artifact Removal for Simultaneous Electroencephalogram and Functional Magnetic Resonance Imaging for Clinical Review in Epilepsy10:23

Equipment Setup and Artifact Removal for Simultaneous Electroencephalogram and Functional Magnetic Resonance Imaging for Clinical Review in Epilepsy

Published on: June 23, 2023

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:
Electroconvulsive Therapy01:30

Electroconvulsive Therapy

Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early years,...
Encephalitis l: Introduction01:19

Encephalitis l: Introduction

Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
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 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.