Fascicle-selective kilohertz-frequency neural conduction block with longitudinal intrafascicular electrodes.
Louis Regnacq1,2, Anil K Thota3, Arianna Ortega Sanabria3
1ETIS Lab, UMR 8051, CY Cergy Paris University, ENSEA, Cergy, France.
Journal of Neural Engineering
|March 27, 2025
Summary
Kilohertz (kHz) continuous stimulation using longitudinal intrafascicular electrodes (LIFEs) precisely blocks nerve conduction. This method offers tunable, selective neural blockade, a promising alternative for treating abnormal neural activity with fewer side effects.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Neural Engineering
Background:
- Electrical stimulation is a therapeutic tool for various neurological conditions.
- Kilohertz (kHz) continuous stimulation offers a method for neural conduction block, distinct from conventional biphasic pulse stimulation.
- High-frequency stimulation presents potential for non-pharmacological treatment of abnormal neural activity.
Purpose of the Study:
- To investigate strategies for enhancing selectivity and control of high-frequency neural conduction block.
- To evaluate the efficacy of longitudinal intrafascicular electrodes (LIFEs) for kHz stimulation.
- To explore the modulation of neural block by adjusting kHz stimulation parameters.
Main Methods:
- In vivo rodent model experiments using the sciatic nerve.
- Application of kHz continuous stimulation via LIFEs targeting motor axons.
- Assessment of neural conduction block, interfascicular selectivity, and muscle fatigue.
Main Results:
- Demonstrated progressive and selective neural conduction block using LIFEs.
- Showed that kHz stimulation amplitude and frequency can tune the extent of neural block.
- Achieved interfascicular selectivity modulated by kHz stimulation frequency, with minimal onset response spillover.
Conclusions:
- kHz stimulation with LIFEs provides precise control over selective nerve conduction block.
- This approach allows for the development of targeted stimulation protocols for abnormal neural activity.
- Findings suggest a potential for reduced side effects compared to conventional methods.
Keywords:
conduction blockkilohertz frequency stimulationlongitudinal intrafascicular electrodesperipheral nerve stimulationMore Related Videos
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