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Author Spotlight: Advancing Pediatric Epilepsy Surgery in Children Through Novel Biomarkers and Enhanced Localization

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Published on: September 20, 2024

Localization and duration dependent effects of pediatric refractory epilepsy on language function.

Brian Ervin¹, Yash Agarwal², Jason Buroker¹

¹Comprehensive Epilepsy Center, Division of Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.

Epilepsy & Behavior : E&B

|November 23, 2025

Summary

This summary is machine-generated.

Longer epilepsy duration impairs naming abilities in children, suggesting early surgery is crucial for preserving language function. Shorter epilepsy duration and localized epileptogenic zones correlate with faster naming responses.

Keywords:

Drug-resistant epilepsy High-gamma modulation Language networks Presurgical language mapping stereo-EEG

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Infant Auditory Processing and Event-related Brain Oscillations

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

Area of Science:

Neuroscience
Epilepsy Research
Language Processing

Background:

Pediatric focal drug-resistant epilepsy can affect cognitive functions like visual naming (VN) and auditory naming (AN).
The influence of epilepsy duration and epileptogenic zone (EZ) location on naming response latencies is not fully understood.
Analyzing high-gamma modulations (HGMs) in language areas offers insights into neural processing during naming tasks.

Purpose of the Study:

To investigate how epilepsy duration and EZ location impact VN and AN response latencies in pediatric focal drug-resistant epilepsy.
To analyze temporal profiles of HGMs in peri-sylvian language areas concerning naming response latencies.
To determine the relationship between epilepsy characteristics and language network function.

Main Methods:

Kernel density distributions of AN and VN response latencies were clustered using k-means.
Response latencies and kernel densities were analyzed using linear mixed-effects models based on age, age of seizure onset, and epilepsy duration.
Temporal envelopes of HGMs during VN and AN were examined in relation to response latencies.

Main Results:

Shorter epilepsy duration, older age at seizure onset, and localized EZ were linked to faster and more consistent naming responses.
Response latencies increased with epilepsy duration and decreased with age and age of seizure onset.
Epilepsy duration exceeding 5.3-5.9 years was associated with prolonged response latencies.
Distinct HGM temporal envelopes were observed in Broca's area (for AN) and visual cortex (for VN) between patients with short and long response latencies.

Conclusions:

Epilepsy duration significantly impacts language network function, specifically naming abilities.
Network dysfunction in refractory epilepsy is duration-dependent and can irreversibly compromise language function.
Early surgical intervention is recommended to prevent long-term language deficits in pediatric epilepsy patients.