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. 2019 Mar-Apr;12(2):364-366.
doi: 10.1016/j.brs.2018.11.003. Epub 2018 Nov 8.

Are EMG and visual observation comparable in determining resting motor threshold? A reexamination after twenty years

Bashar W Badran  1 , Martina Ly  2 , William H DeVries  3 , Chloe E Glusman  3 , Angela Willis  4 , Saxby Pridmore  5 , Mark S George  6
Affiliations

Are EMG and visual observation comparable in determining resting motor threshold? A reexamination after twenty years

Bashar W Badran et al. Brain Stimul. 2019 Mar-Apr.
No abstract available

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Conflict of interest statement

Conflicts of interest

ML is an employee of eemagine Medical Imaging Solution Gmbh. AW is an employee of Magstim. Ly and Willis were involved with StimGuide product development. The Magstim StimGuide TMS Navigation System was provided on loan to MUSC, had no impact on the outcome of the study, and no financial incentive was provided to MUSC for its use. We further confirm the order of authors listed in this manuscript has been approved by all of us and that the work described in this manuscript is not currently under consideration for publication in another journal.

Figures

Fig. 1.
Fig. 1.
a) overall timeline of the experimental visit. b) hand representations demonstrating how the motor threshold was determined. For visual method, any muscle movement caudal to the wrist was considered a “yes” response. For EMG methods, electrodes placed as shown measure MEP’s. c) rMT values for each of the 4 attempts (n = 16 per attempt) reveal that within-methods, Visual and EMG rMTs are non-significantly different and consistent between test 1 and test 2. Between-methods reveal EMG rMT as slightly lower than visual method.
See this image and copyright information in PMC

Comment on

References

    1. Pridmore S, Fernandes Filho JA, Nahas Z, Liberatos C, George MS. Motor threshold in transcranial magnetic stimulation: a comparison of a neurophysiological method and a visualization of movement method. J ECT 1998;14(1): 25–7. - PubMed
    1. O’Reardon JP, Solvason HB, Janicak PG, Sampson S, Isenberg KE, Nahas Z, et al. Efficacy and safety of transcranial magnetic stimulation in the acute treatment of major depression: a multisite randomized controlled trial. Biol Psychiatr 2007;62(11):1208–16. - PubMed
    1. Yesavage JA, Fairchild JK, Mi Z, Biswas K, Davis-Karim A, Phibbs CS, et al. Effect of repetitive transcranial magnetic stimulation on treatment-resistant major depression in US veterans: a randomized clinical trial. JAMA Psychiatr 2018;75(9):884–93. - PMC - PubMed
    1. Levkovitz Y, Isserles M, Padberg F, Lisanby SH, Bystritsky A, Xia G, et al. Efficacy and safety of deep transcranial magnetic stimulation for major depression: a prospective multicenter randomized controlled trial. World Psychiatr 2015;14(1):64–73. - PMC - PubMed
    1. George MS, Lisanby SH, Avery D, McDonald WM, Durkalski V, Pavlicova M, et al. Daily left prefrontal transcranial magnetic stimulation therapy for major depressive disorder: a sham-controlled randomized trial. Arch Gen Psychiatr 2010;67(5):507–16. - PubMed