Deep Brain Stimulation for Refractory Temporal Lobe Epilepsy. Current Status and Future Trends

Area of Science:

• Neuroscience
• Neurosurgery
• Epileptology

Background:

• Refractory temporal lobe epilepsy (TLE) poses significant challenges for treatment.
• Deep brain stimulation (DBS) is an emerging therapeutic option for drug-resistant epilepsy.
• Optimizing DBS targets and techniques is crucial for maximizing antiseizure efficacy and minimizing risks.

Purpose of the Study:

• To compare targets for DBS in refractory TLE.
• To analyze the rationale, latency, and long-term seizure control of DBS for TLE.
• To evaluate surgical techniques for optimizing antiseizure effects and reducing surgical risks.

Main Methods:

• Comparative analysis of DBS targets for refractory TLE.
• Review of surgical techniques for DBS implantation and programming.
• Evaluation of seizure control latency and long-term outcomes based on DBS parameters (programmed vs. responsive, intermittent vs. continuous).

Main Results:

• Seizure control is comparable between programmed DBS and DBS responsive to electroencephalogram (EEG) activity.
• No significant difference in long-term seizure control exists between programmed/responsive and intermittent/continuous DBS.
• Intermittent programmed DBS applied to non-sclerotic tissue, like the parahippocampal cortex, may yield significant antiseizure effects within the first month.
• Deep brain stimulation (DBS) does not induce neuropsychological deterioration.

Conclusions:

• DBS is a viable treatment for refractory TLE with comparable long-term seizure control across various programming strategies.
• Intermittent programmed DBS may offer faster seizure reduction in specific non-sclerotic epilepsy tissue targets.
• DBS for TLE is associated with preserved neuropsychological function.