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Brain Waves

Brain Waves

Brain waves are electrical signals generated by the neurons in the brain, which are regularly monitored to measure mental activities. Brain waves and their frequency ranges can be measured using an electroencephalogram or EEG. There are four main types of brain waves, each with distinct characteristics:

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...

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Related Experiment Video

Updated: Jun 23, 2026

Brain Source Imaging in Preclinical Rat Models of Focal Epilepsy using High-Resolution EEG Recordings

Brain Source Imaging in Preclinical Rat Models of Focal Epilepsy using High-Resolution EEG Recordings

Published on: June 6, 2015

EEG in Epilepsy.

Continuum (Minneapolis, Minn.)

|February 3, 2025

Summary

This summary is machine-generated.

Electroencephalography (EEG) is crucial for diagnosing epilepsy but requires careful application to avoid misdiagnosis. Understanding EEG fundamentals, limitations, and interpretation is key for accurate patient care.

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Last Updated: Jun 23, 2026

Brain Source Imaging in Preclinical Rat Models of Focal Epilepsy using High-Resolution EEG Recordings

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Published on: June 6, 2015

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

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

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

Published on: June 23, 2023

Area of Science:

Neurology
Neurophysiology

Background:

Electroencephalography (EEG) is the primary ancillary test for epilepsy diagnosis.
Incorrect EEG interpretation can lead to significant patient harm and misdiagnosis.
Neurologists need to accurately apply EEG findings to guide patient management.

Purpose of the Study:

Review EEG fundamentals and limitations.
Guide the selection of appropriate EEG types for clinical questions.
Provide instruction on interpreting EEG results in clinical context.

Main Methods:

Review of existing literature on EEG fundamentals and interpretation.
Discussion of common EEG findings and their limitations.
Inclusion of updated definitions and consensus on EEG patterns.

Main Results:

EEG is essential but has limitations and variability.
Longer EEG recordings generally offer higher diagnostic yield.
Updated definitions for epileptiform discharges and critical care EEG patterns are presented.

Conclusions:

Proper application of EEG is vital for accurate epilepsy diagnosis.
Understanding EEG limitations and results interpretation is crucial for patient care.
Neurologists should be proficient in applying EEG findings to clinical practice.