This study examines the effects of stereoelectroencephalography-guided radiofrequency thermocoagulation (SEEG-RF-TC) on brain activity and effective connectivity in patients with drug-resistant focal epilepsy. The SEEG-RF-TC procedure was applied to focal lesions in the opercular-central and/or insular cortex to observe acute connectivity changes without the involvement of long-term neuroplastic processes. Using cortico-cortical evoked potentials (CCEPs), the study monitored alterations in effective connectivity before and after the intervention, revealing neural network reorganization with both disruptive and facilitative effects. These findings demonstrate the brain’s capacity for immediate adaptive response to a controlled focal lesion, suggesting a dynamic connectivity adjustment that enhances our understanding of post-lesion compensatory mechanisms and offers new insights for targeted therapeutic approaches in neurological disorders.
Questo studio indaga gli effetti delle termocoagulazioni radiofrequenza guidate dalla stereoelettroencefalografia (SEEG-RF-TC) sull’attività cerebrale e sulla connettività effettiva in pazienti con epilessia focale farmacoresistente. La procedura SEEG-RF-TC è stata applicata a lesioni focali nella corteccia opercolare-centrale e/o insulare per osservare cambiamenti acuti della connettività senza il coinvolgimento di processi di neuroplasticità a lungo termine. Attraverso l’uso di potenziali evocati cortico-corticali (CCEP), lo studio ha monitorato le variazioni della connettività effettiva prima e dopo l’intervento, rilevando una riorganizzazione dei network neuronali che include sia effetti distruttivi sia facilitativi. Questi risultati mostrano come il cervello possa rispondere in modo immediato a una lesione focale controllata, suggerendo una capacità di adattamento dinamico della connettività che contribuisce alla comprensione dei meccanismi di compensazione post-lesione e apre nuove prospettive per interventi terapeutici mirati nei disturbi neurologici.
Network effects of SEEG-guided Radiofrequency Thermocoagulations
Piergiorgio, d’Orio;
2025
Abstract
This study examines the effects of stereoelectroencephalography-guided radiofrequency thermocoagulation (SEEG-RF-TC) on brain activity and effective connectivity in patients with drug-resistant focal epilepsy. The SEEG-RF-TC procedure was applied to focal lesions in the opercular-central and/or insular cortex to observe acute connectivity changes without the involvement of long-term neuroplastic processes. Using cortico-cortical evoked potentials (CCEPs), the study monitored alterations in effective connectivity before and after the intervention, revealing neural network reorganization with both disruptive and facilitative effects. These findings demonstrate the brain’s capacity for immediate adaptive response to a controlled focal lesion, suggesting a dynamic connectivity adjustment that enhances our understanding of post-lesion compensatory mechanisms and offers new insights for targeted therapeutic approaches in neurological disorders.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.14242/213261
URN:NBN:IT:UNIPR-213261