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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...

Seizures: Classification

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:

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Network Analysis of Foramen Ovale Electrode Recordings in Drug-resistant Temporal Lobe Epilepsy Patients

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The Wada test in the evaluation for epilepsy surgery.

D W Loring¹, K J Meador, M Westerveld

¹Department of Neurology, Medical College of Georgia, Augusta, Georgia 30912-3275, USA. Fax. 001 706 721 7588.

Neurosciences (Riyadh, Saudi Arabia)

|November 27, 2013

Summary

The Wada test, a pre-operative evaluation for epilepsy surgery, assesses language representation and predicts memory changes after temporal lobe resection. It involves temporary hemispheric anesthesia using sodium amobarbital.

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Pupillary Response as Assessment of Effective Seizure Induction by Electroconvulsive Therapy

Pupillary Response as Assessment of Effective Seizure Induction by Electroconvulsive Therapy

Published on: April 11, 2019

Area of Science:

Neurology
Neurosurgery
Epileptology

Background:

The Wada test is crucial for pre-operative evaluation in epilepsy surgery.
Temporal lobe surgery can lead to significant memory decline.
Accurate assessment of cerebral function is vital for surgical planning.

Purpose of the Study:

To detail the application of the Wada test in epilepsy surgery.
To discuss the establishment of cerebral language representation.
To explore the prediction of seizure and memory outcomes.

Main Methods:

The Wada test involves the slow injection of sodium amobarbital into the internal carotid artery.
This induces temporary anesthesia of one cerebral hemisphere.
Language function and memory are assessed during the period of anesthesia.

Main Results:

The procedure establishes cerebral language representation and lateralization.
It provides a reversible model to assess risks of memory decline.
It aids in predicting surgical outcomes for epilepsy patients.

Conclusions:

The Wada test is essential for evaluating language dominance and memory risks before epilepsy surgery.
It informs surgical decisions to minimize post-operative cognitive deficits.
Future directions may refine this critical pre-surgical assessment technique.