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High-Performance Magnetic-core Coils for Targeted Rodent Brain Stimulations

Biomedical Engineering Frontiers 2022年第1期3卷 82-92页

作者： hedyeh bagherzadeh Qinglei Meng Hanbing Lu Elliott Hong Yihong Yang Fow-Sen Choa Department of Computer Science and Electrical Engineering University of MarylandBaltimore CountyBaltimoreMD 21250USA Neuroimaging Research Branch National Institute on Drug AbuseNational Institutes of HealthBaltimoreMD 21224USA Maryland Psychiatric Research Center Department of PsychiatryUniversity of Maryland School of MedicineBaltimoreMD 21201USA

Objective and Impact *** is a need to develop rodent coils capable of targeted brain stimulation for treating neuropsychiatric disorders and understanding brain *** describe a novel rodent coil design to improve the focality for targeted stimulations in small rodent *** magnetic stimulation(TMS)is becoming increasingly important for treating neuropsychiatric disorders and understanding brain *** studies permit invasive manipulations and are essential for the mechanistic understanding of TMS effects and explorations of therapeutic outcomes in disease ***,existing TMS tools lack focality for targeted ***,there has been limited fundamental research on developing coils capable of focal stimulation at deep brain regions on small animals like *** this study,ferromagnetic cores are added to a novel angle-tuned coil design to enhance the coil performance regarding penetration depth and *** simulations and experimental electric field measurements were conducted to optimize the coil *** proposed coil system demonstrated a significantly smaller stimulation spot size and enhanced electric field decay rate in comparison to existing *** the ferromagnetic core reduces the energy requirements up to 60%for rodent brain *** simulated results are validated with experimental measurements and demonstration of suprathreshold rodent limb excitation through targeted motor cortex *** newly developed coils are suitable tools for focal stimulations of the rodent brain due to their smaller stimulation spot size and improved electric field decay rate.

关键词： stimulation manipulation becoming

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