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Updated: Aug 1, 2026

Analysis of Gene Expression Changes in the Rat Hippocampus After Deep Brain Stimulation of the Anterior Thalamic Nucleus
Published on: March 8, 2015
Thalamic Stimulation Induced Changes in Network Connectivity and Excitability in Epilepsy
Nicholas M Gregg1, Gabriela Ojeda Valencia2, Tereza Pridalova1
1Department of Neurology, Mayo Clinic, Rochester, MN.
Deep brain stimulation (DBS) and brain stimulation evoked potentials (BSEPs) during sEEG map epilepsy networks. Longer DBS trials modulated network excitability, while shorter trials reduced seizure activity, advancing biomarker-informed neuromodulation.
Area of Science:
- Neuroscience
- Neurology
- Biomarkers
Background:
- Deep brain stimulation (DBS) effects occur over various timescales, complicating epilepsy treatment optimization.
- Brain stimulation evoked potentials (BSEPs) offer insights into network excitability and connectivity.
Purpose of the Study:
- To integrate BSEPs and DBS trials during sEEG to map seizure networks.
- To modulate network dynamics and monitor excitability for biomarker-informed neuromodulation in epilepsy.
Main Methods:
- Retrospective analysis of 10 epilepsy patients undergoing clinical sEEG.
- High-frequency thalamic DBS trials with pre- and post-stimulation BSEP acquisition.
- Automated tracking of interictal epileptiform discharges.
Main Results:
- Baseline BSEPs identified distinct thalamic subfield network engagement patterns.
- DBS >1.5 hours reduced BSEP amplitudes, correlating with connectivity strength.
- Shorter DBS trials suppressed interictal epileptiform discharge rates in connected networks.
Conclusions:
- BSEPs and DBS trials during sEEG provide novel network biomarkers.
- This approach enables evaluation of large-scale network modulation across timescales.
- Advances biomarker-informed neuromodulation strategies for epilepsy treatment.
More Related Videos
08:23A Multimodal Imaging- and Stimulation-based Method of Evaluating Connectivity-related Brain Excitability in Patients with Epilepsy
Published on: November 13, 2016
09:49Using a Bipolar Electrode to Create a Temporal Lobe Epilepsy Mouse Model by Electrical Kindling of the Amygdala
Published on: June 29, 2022
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