Cellular mechanisms underlying carry-over effects after magnetic stimulation
Hui Ye1, Maria Dima2, Vincent Hall2
1Department of Biology, Loyola University Chicago, Quinlan Life Sciences Education and Research Center, 1032 W. Sheridan Rd., Chicago, IL, 60660, USA. hye1@luc.edu.
Scientific Reports
|March 2, 2024
Summary
Magnetic stimulation can cause lasting neural inhibition, known as carry-over effects, due to ion channel dysfunction. Understanding these effects is key for predictable neuromodulation outcomes.
Area of Science:
- Neuroscience
- Biophysics
- Computational Biology
Background:
- Magnetic fields are used for clinical neuromodulation.
- Acute neural responses to magnetic fields are well-studied.
- Carry-over effects of magnetic stimulation are poorly understood, impacting predictability.
Purpose of the Study:
- Investigate cellular mechanisms of magnetic stimulation carry-over effects.
- Elucidate the role of ion channel dynamics in persistent neural inhibition.
- Explore methods to control these carry-over effects.
Main Methods:
- Micro-magnetic stimulation (µMS) on Aplysia californica neurons.
- Electrophysiology and computational modeling.
- Multi-compartment single-neuron simulation.
Main Results:
- High-frequency magnetic stimulation induced immediate and persistent neural inhibition.
- Carry-over effects were observed in firing neurons and across the ganglion sheath.
- Modeling revealed ion channel dysfunction (compromised Na+, enhanced K+ conductance) as the mechanism.
- Post-stimulus membrane potential manipulation controlled carry-over effects.
Conclusions:
- Carry-over effects in neural magnetic stimulation are linked to ion channel dynamics.
- Understanding these mechanisms can improve clinical neuromodulation.
- Potential for new neural engineering or pharmacological strategies to manage carry-over effects.
Keywords:
Aplysia californicaCarry-over effectsInhibitionIon channelMagnetic stimulationMiniature coilNEURON modelingNeuron
