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Updated: Jan 23, 2026
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Brain Source Imaging in Preclinical Rat Models of Focal Epilepsy using High-Resolution EEG Recordings
Published on: June 6, 2015
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Lacosamida modula la centralidad de redes en banda alfa: un estudio de EEG cuantitativo en epilepsia focal sin tratar
Marco Sferruzzi1, Lorenzo Ricci2, Margherita A G Matarrese3
1Department of Medicine and Surgery, Research Unit of Neurology, Neurobiology, Neurophysiology, University Campus Bio-Medico di Roma, Rome, Italy.
Resumen
El tratamiento con lacosamida (LCM) no alteró las métricas generales de EEG cuantitativo (qEEG) en pacientes con epilepsia focal. Sin embargo, la centralidad de banda alfa (BtwC) mostró ser prometedora en la predicción de la ausencia de convulsiones a largo plazo.
Área de la Ciencia:
- Neurociencia
- Epileptología
- Neurociencia Computacional
Sus antecedentes:
- La epilepsia focal afecta a numerosas personas, lo que requiere tratamientos eficaces.
- La Lacosamida (LCM) es un fármaco antiepiléptico de uso común.
- Comprender los efectos neurofisiológicos de la LCM es crucial para optimizar el tratamiento.
Objetivo del estudio:
- Investigar los cambios farmaco-EEG inducidos por Lacosamida (LCM) en personas con epilepsia focal (PwE) sin tratar.
- Explorar la asociación entre las métricas de EEG cuantitativo (qEEG) y los resultados clínicos a largo plazo en PwE tratados con LCM.
- Evaluar el valor predictivo de las métricas de qEEG de teoría de grafos para la ausencia de convulsiones.
Principales métodos:
- Análisis retrospectivo de 28 PwE y 25 controles sanos (HC).
- Datos de EEG adquiridos antes y ~6 meses después de la inicio de LCM.
- Comparación de la densidad espectral de potencia (PSD), la correlación de la envolvente de amplitud (AEC) y las métricas de teoría de grafos (por ejemplo, centralidad).
- Se utilizó regresión logística para correlacionar métricas de qEEG y variables clínicas con la ausencia de convulsiones a dos años.
Principales resultados:
- LCM no alteró significativamente las métricas de qEEG promediadas globalmente.
- La PSD de banda theta fue mayor en PwE en comparación con HC.
- La centralidad de banda alfa (BtwC) fue mayor en PwE que en HC antes de LCM (p=0.007).
- La BtwC de banda alfa demostró alta precisión (0.86) y AUC (0.88) en la predicción de la ausencia de convulsiones.
Conclusiones:
- Si bien la LCM no indujo cambios significativos en el qEEG global, la BtwC de banda alfa mostró una tendencia a la normalización, lo que sugiere una recuperación parcial de la red.
- La combinación de métricas de qEEG, particularmente la BtwC de banda alfa, con datos clínicos mejoró significativamente la predicción de los resultados de las convulsiones a largo plazo.
- El análisis de qEEG de teoría de grafos proporciona información valiosa sobre el impacto neurofisiológico de la LCM en la epilepsia focal.
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