Abstract
In recent years, motor evoked potentials (MEPs) following magnetic stimulation have been introduced into clinical assessment of central motor pathways. One disadvantage of magnetic stimulation is that focal stimulation has been considered impossible. However, a certain type of circular coil, in which the electromagnetic field is most intense at the centre, makes this possible. Another problem is that the direction of current flow in the coil has some effect on the potentials elicited. Our purpose in this study was to provide data for mapping the human motor cortex using such a circular coil and to clarify the effect of the direction of current flow in the coil on MEPs with transcranial magnetic stimulation.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Barker AT, Jalinous R, Freeston IL. Noninvasive magnetic stimulation of human motor cortex. Lancet. 1985;2:1106–1107.
Barker AT, Freeston IL, Jalinous R, Jarratt JA. Clinical evaluation of conduction time measurements in central motor pathways using magnetic stimulation of the human brain. Lancet. 1986;1:1325–1326.
Hess CW, Mills KR, Murray NMF. Measurement of central motor conduction in multiple sclerosis by magnetic brain stimulation. Lancet. 1986;2:355–358.
Hess CW, Mills KR, Murray NMF, Schriefer TN. Magnetic brain stimulation: Central motor conduction studies in multiple sclerosis. Ann Neurol. 1987;22:744–752.
Cohen LG, Hallett M, Lelli S. Noninvasive mapping of human motor cortex with transcranial magnetic stimulation. In: Chokroverty S, ed. Magnetic stimulation clinical neurophysiology. Stoneham, MA: Butterworth; 1990:113–119.
Nishijima Y, Okada M, Izumi T, Yamazaki Y, Toda, N. The standard methods of magnetic stimulation to the skull and neck to elicit compound muscle action potentials. SEIKEIGEKA, 1992;43:571–576 (Japanese).
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1994 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Izumi, T., Nishijima, Y., Okada, M., Ohta, Y., Toda, N., Yamazaki, Y. (1994). An attempt at noninvasive mapping of the human motor cortex using transcranial magnetic stimulation. In: Jones, S.J., Hetreed, M., Boyd, S., Smith, N.J. (eds) Handbook of Spinal Cord Monitoring. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1416-5_44
Download citation
DOI: https://doi.org/10.1007/978-94-011-1416-5_44
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-4619-0
Online ISBN: 978-94-011-1416-5
eBook Packages: Springer Book Archive