Repetitive magnetic stimulation and motor evoked potentials

Electroencephalography and Clinical Neurophysiology
P JennumA Fuglsang-Frederiksen

Abstract

The aim of the study was to evaluate the effect of varying stimulus rates of repetitive transcranial magnetic stimulation (RTMS) on the motor evoked potentials (MEPs) recorded from the right abductor pollicis brevis muscle (APB). Thirteen normals were included. Stimuli were applied to the cortex and to the median nerve at the wrist. The cortical stimuli were applied without and with facilitation. Stimulus intensity was 1.2 times the motor threshold (TmAPB) for cortical stimulation and supramaximal for peripheral stimulation. Stimulus rates were 1, 2, 3, 5, 10 and 20 Hz. Nine pulses were applied in each stimulus series. At stimulus rates between 1 and 3 Hz no amplitude changes were observed throughout the stimulation. At 5 Hz stimulation inhibition of some of the MEPs was observed followed by MEPs with increased amplitude. At 10 Hz stimulation some MEPs were totally inhibited, interrupted by an MEP with increased amplitude, resembling clonic contraction. At 20 Hz the inhibition of the MEPs decreased (P < 0.05) compared to 10 Hz stimulation. Facilitation decreased the inhibition at 5 and 10 Hz stimulation (P < 0.01). On peripheral stimulation a decrement was observed with stimulus rates of 10 and 20 Hz. The study shows that RTMS ...Continue Reading

References

Dec 1, 1992·Electroencephalography and Clinical Neurophysiology·J Valls-SoléM Hallett
Sep 1, 1992·Journal of the Neurological Sciences·D ClausC Brunhölzl
Sep 1, 1990·Electroencephalography and Clinical Neurophysiology·M InghilleriM Manfredi
Aug 1, 1991·Electroencephalography and Clinical Neurophysiology·P FuhrM Hallett
Jan 1, 1989·Experimental Brain Research·B BrouwerG Midroni
May 11, 1985·Lancet·A T BarkerI L Freeston
Aug 1, 1993·Electroencephalography and Clinical Neurophysiology·A UnciniS Pullman

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Citations

Oct 28, 2003·Experimental Brain Research·M InghilleriA Berardelli
May 23, 2007·Experimental Brain Research·Antonella ConteAlfredo Berardelli
Apr 3, 2013·Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology·Somayeh MongabadiJavad Mirnajafi-Zadeh
Sep 23, 2003·Brain Research. Brain Research Reviews·Alexander T Sack, David E J Linden
Dec 14, 2002·Brain and Cognition·Sulekha Anand, John Hotson
Jun 11, 2003·Physical Medicine and Rehabilitation Clinics of North America·Valerie Reid
May 29, 2000·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·W MuellbacherM Hallett
Feb 22, 2002·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·M SommerW Paulus
May 10, 2000·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·F MaedaA Pascual-Leone
Jun 26, 2001·European Journal of Neurology : the Official Journal of the European Federation of Neurological Societies·J E NielsenA Fuglsang-Frederiksen
Sep 15, 1998·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·A Pascual-LeoneM D Catalá
Oct 24, 2001·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·R SparingR Töpper
Oct 4, 2015·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Setsu Nakatani-EnomotoYoshikazu Ugawa
Mar 21, 2015·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Matteo BolognaAlfredo Berardelli
Apr 15, 2011·The European Journal of Neuroscience·Ennio IezziAlfredo Berardelli
May 3, 2011·European Journal of Pain : EJP·Filippo BrighinaBrigida Fierro
Aug 2, 2016·Expert Review of Neurotherapeutics·Antonio SuppaGiovanni Fabbrini
Nov 6, 2004·Reviews in the Neurosciences·Ulf Ziemann
Mar 28, 2002·Anesthesia and Analgesia·Kai-Michael Scheufler, Josef Zentner
Aug 19, 2016·Frontiers in Neural Circuits·Marcus T Wilson, Lynley St George

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