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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...

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Related Experiment Video

Updated: Jun 17, 2026

$Stereo-Electro-Encephalo-Graphy SEEG With Robotic Assistance in the Presurgical Evaluation of Medical Refractory Epilepsy: A Technical Note$

Stereo-Electro-Encephalo-Graphy SEEG With Robotic Assistance in the Presurgical Evaluation of Medical Refractory Epilepsy: A Technical Note

Published on: June 13, 2016

Experiential reflex epilepsy demonstrated with stereoEEG.

Ruta Yardi¹, Peter Wolf²

¹University of Kentucky, Lexington, KY, USA; Geisinger neuroscience institute, Danville, PA, USA.

|September 6, 2025

Summary

This summary is machine-generated.

This study shows that recalling specific memories can trigger seizures in some epilepsy patients. Stereo-EEG revealed how memory networks activate during these reflex seizures.

Keywords:

Experiential aura Memory triggered epilepsy Reflex epilepsy StereoEEG

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Robotic-Guided Stereoelectroencephalography for Invasive Epilepsy Monitoring

Robotic-Guided Stereoelectroencephalography for Invasive Epilepsy Monitoring

Published on: June 13, 2025

Area of Science:

Neuroscience
Epileptology
Cognitive Neurology

Background:

Reflex epilepsies involve seizures triggered by specific stimuli.
The role of memory in memory-induced seizures is debated: trigger versus manifestation.
Understanding seizure triggers is crucial for epilepsy management.

Purpose of the Study:

To investigate the mechanism of reflex seizures provoked by autobiographical memory recall.
To explore the neural correlates of memory-triggered seizures using stereo-electroencephalography (sEEG).
To elucidate the interplay between memory networks and seizure initiation in reflex epilepsies.

Main Methods:

Case study of a 25-year-old female patient with memory-induced reflex seizures.
Utilized stereo-electroencephalography (sEEG) to monitor brain activity during voluntary memory recall.
Analyzed activation patterns within physiological memory networks during seizure onset.

Main Results:

Successfully captured the reflex seizure phenomenon induced by voluntary memory retrieval.
Identified specific activation patterns in memory-related brain networks.
Demonstrated the contribution of these networks to seizure initiation.

Conclusions:

Memory recollection can act as a direct trigger for seizures in susceptible individuals.
This case provides insights into the neural circuitry underlying memory-triggered epilepsy.
Highlights the dynamic interaction between cognitive processes and cortical excitability in reflex epilepsies.