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Epilepsy and Seizures: Overview

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...

Overview of Synapses

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A synapse is a specialized structure where two neurons connect, allowing them to pass an electrical or chemical signal to another neuron. It is the point of communication between neurons. The term "synapse" is derived from the Greek word "synapsis," which means "conjunction." The entire process of neural communication revolves around the synapse. When activated, a neuron releases chemicals known as neurotransmitters into the synapse. These neurotransmitters cross the synapse and bind to...

Seizures l: Introduction

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: Types

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.

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Related Experiment Video

Updated: Jun 8, 2026

Manipulation of Epileptiform Electrocorticograms (ECoGs) and Sleep in Rats and Mice by Acupuncture

Manipulation of Epileptiform Electrocorticograms (ECoGs) and Sleep in Rats and Mice by Acupuncture

Published on: December 22, 2016

[Influence between sleep and epilepsy: synopsis and prospectus].

V Leonetta¹, M L Livani, G Di Benedetto

¹Dipartimento di Oftalmologia, Ambulatorio di Elettrofisiologia e Tecniche Biomediche Oculari. Università Sapienza, Roma, Italia.

La Clinica Terapeutica

|October 16, 2010

Summary

This study explores sleep functions and its representation using hypnograms. Polysomnography, including EEG, EMG, and EOG, aids in evaluating neurological diseases and epilepsy, with sleep impacting EEG findings.

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Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice

Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice

Published on: August 2, 2017

Related Experiment Videos

Last Updated: Jun 8, 2026

Manipulation of Epileptiform Electrocorticograms (ECoGs) and Sleep in Rats and Mice by Acupuncture

Manipulation of Epileptiform Electrocorticograms (ECoGs) and Sleep in Rats and Mice by Acupuncture

Published on: December 22, 2016

Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice

Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice

Published on: August 2, 2017

Area of Science:

Neuroscience
Sleep Medicine
Neurology

Context:

Sleep is crucial for neurological function and disease evaluation.
Polysomnography (PSG) techniques like EEG, EMG, and EOG are vital for monitoring sleep.
Cyclic Alternative Pattern (CAP) quantifies sleep stages and their relation to neurological conditions.

Purpose:

To review theories on sleep function and its representation.
To highlight the utility of hypnograms in monitoring sleep pathophysiology.
To discuss the role of sleep and sleep deprivation in epilepsy evaluation.

Summary:

The study examines sleep theories and representation, emphasizing hypnograms for monitoring sleep pathophysiology in neurological diseases.
Polysomnography (PSG) with EEG, EMG, and EOG is detailed for evaluating neurological conditions.
Cyclic Alternative Pattern (CAP) and its rate are defined, relating to sleep stages and neurological assessment.
The intimate relationship between sleep and epilepsy is explored, noting sleep's role in activating epileptiform discharges and aiding in the localization of epileptic areas.

Impact:

Provides insights into using sleep monitoring for neurological disease assessment.
Enhances understanding of sleep's role in epilepsy diagnosis and localization.
Suggests the importance of considering sleep patterns and deprivation in neurological evaluations.