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Pilot study of using transcranial temporal interfering theta-burst stimulation for modulating motor excitability in
Chun-Wei Wu1, Bor-Shing Lin2, Zhao Zhang3
1School of Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan.
Journal of Neuroengineering and Rehabilitation
|August 30, 2024
Summary
This study demonstrates that transcranial temporal interference stimulation (tTIS) can effectively deliver theta burst stimulation to modulate neuroplasticity in rats, showing potential for deep brain stimulation applications.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Neuromodulation
Background:
- Transcranial temporal interference stimulation (tTIS) enables deep brain targeting via surface electrodes.
- Theta burst stimulation is a key protocol for modulating neuroplasticity.
Purpose of the Study:
- To develop and validate a theta burst stimulation protocol using tTIS in rats.
- To investigate the neuromodulatory effects of tTIS-delivered theta burst stimulation on motor cortex excitability.
Main Methods:
- Implanted cannula electrodes into the primary motor cortex of rats.
- Characterized temporal interference envelopes and evaluated motor activation via electromyography.
- Measured motor evoked potential (MEP) changes after tTIS and conventional theta burst stimulation.
Main Results:
- tTIS successfully induced potentiation and suppression with intermittent and continuous theta burst, respectively.
- No significant difference was observed in MEP modulation between tTIS and conventional transcranial electrical stimulation.
- Sham treatments showed no effect on MEP amplitude.
Conclusions:
- tTIS is a feasible technique for implementing theta burst stimulation for motor cortical neuromodulation.
- tTIS holds potential for deep-brain network modulation using theta burst protocols.
