Cited by 651Transcranial Magnetic Stimulation StudiesNeuroscience and Neuropharmacology ResearchNeurological disorders and treatments

Interindividual variability of the modulatory effects of repetitive transcranial magnetic stimulation on cortical excitability

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Maeda, Fumiko, Keenan, Julian P., Tormos, Jose M., Topka, Helge, Pascual-Leone, Alvaro·2000·Experimental Brain Research

Abstract

Repetitive transcranial magnetic stimulation (rTMS) appears to have effects on cortical excitability that extend beyond the train of rTMS itself. These effects may be inhibitory or facilitatory and appear to depend on the frequency, intensity, duration and intertrain interval of the rTMS. Many studies assume facilitatory effects of high-frequency rTMS and inhibitory effects of low-frequency rTMS. Nevertheless, the interindividual variability of this modulation of cortical excitability by rTMS has not been systematically investigated. In this study, we applied 240 pulses of rTMS at 90% of the subjects' motor threshold to their motor cortex at different frequencies (1, 10, 15 and 20 Hz) and examined the effects on motor evoked potentials (frequency tuning curve). Although the averaged group data showed a frequency-dependent increase in cortical excitability, each subject had a different pattern of frequency tuning curve, i.e. a different modulatory effect on cortical excitability at different rTMS frequencies. The interindividual variability of these modulatory effects was still high, though less so, when the number of rTMS pulses was increased to 1,600. These findings illustrate the degree of variability of the rTMS effects in the human brain.

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  1. Pascual-Leone A, Grafman J, Cohen LG, Roth BJ, Hallett M (1996) Transcranial magnetic stimulation. A new tool for the study of the higher cognitive functions in humans. In: Graf- man and Boller (eds) Handbook of neuropsychology, vol. 11. Elsevier, Amsterdam, pp 267-290

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Authors
Maeda, F., Keenan, J. P., Tormos, J. M., Topka, H., & Pascual-Leone, A.
Affiliations
  • Beth Israel Deaconess Medical Center (US)
  • University of Tübingen (DE)
Venue
Experimental Brain Research
Published
2000-08-04
Volume
133
Issue
4
Pages
425-430
ISSN
  • 0014-4819 (ISSN-L)
  • 1432-1106
OpenAlex
W1975080710
Cited by
651
References
26
Citations by year
2026: 22 · 2025: 21 · 2024: 33 · 2023: 31 · 2022: 37 · 2021: 35 · 2020: 28 · 2019: 29 · 2018: 23 · 2017: 25 · 2016: 23 · 2015: 26 · 2014: 37 · 2013: 24 · 2012: 23
FWCI
9.93
Type
journal article
Language
en
Open access
Licence
Locations
  • Experimental Brain Research (publishedVersion)
  • PubMed (publishedVersion)
  • RIUCV (Universidad Católica de Valencia San Vicente Martír) (submittedVersion, cc-by-nc-nd)
  • Hispana (submittedVersion, cc-by-nc-nd)
Funders
National Institute of Mental Health (R01MH57980, R01MH057980)
Topics
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
Keywords
repetitive transcranial magnetic stimulation, interindividual variability, cortical excitability, motor cortex, motor evoked potentials, frequency tuning curves, high-frequency rTMS, low-frequency rTMS, motor threshold
MeSH terms
Cerebral Cortex, Electric Stimulation, Humans, Evoked Potentials, Motor, Electromagnetic Phenomena

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