Magnetic stimulation of the motor cortex-theoretical considerations
- 1 January 1991
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. 38 (2) , 180-191
- https://doi.org/10.1109/10.76385
Abstract
The aim of this paper is to present a first approximation model for the computation of the electric fields produced in the brain tissues by magnetic stimulation. Results are given in terms of induced electric field and current density caused by coils of different radii and locations. Nontraditional coil locations and assemblies are also considered (multicoil arrangements). Model simulations show that a good control of the excitation spread can be achieved by proper positioning of the coil. It is also predicted that one of the major drawbacks of the technique, i.e., the poor ability to concentrate the current spread into a small brain area can be partially overcome by more effective coil positioning and/or assembly. Finally, some comparisons are made among the results obtained from electric and magnetic stimulation. This is thought to be of great help in the design of experiments aimed to understand the relative role of the different brain structures responsible for the motor response.Keywords
This publication has 32 references indexed in Scilit:
- On the magnetic field and the electrical potential generated by bioelectric sources in an anisotropic volume conductorMedical & Biological Engineering & Computing, 1988
- Electromagnetic fields in biological studiesAnnals of Biomedical Engineering, 1985
- Nervous propagation along ‘central’ motor pathways in intact man: Characteristics of motor responses to ‘bifocal’ and ‘unifocal’ spine and scalp non-invasive stimulationElectroencephalography and Clinical Neurophysiology, 1985
- A new interpretation of the generators of BAEP waves I–V: Results of a spatio-temporal dipole modelElectroencephalography and Clinical Neurophysiology/Evoked Potentials Section, 1985
- Nerve impulse propagation along central and peripheral fast conducting motor and sensory pathways in manElectroencephalography and Clinical Neurophysiology, 1985
- Monitoring Spinal Motor Tract Function Using Cortical Stimulation: A Preliminary ReportPublished by Springer Nature ,1985
- Effects of motor cortex stimulation on spinal interneurones in intact manExperimental Brain Research, 1984
- Effect of Inhomogeneities on Surface Signals Coming from a Cerebral Current-Dipole SourceIEEE Transactions on Biomedical Engineering, 1974
- EEG Electrode Sensitivity-An Application of ReciprocityIEEE Transactions on Biomedical Engineering, 1969
- Specific impedance of cerebral white matterExperimental Neurology, 1965