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. 2007 Oct 31;48(5):795–801. doi: 10.3349/ymj.2007.48.5.795

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Copyright © 2007 The Yonsei University College of Medicine

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1 — (A) Motor evoked potential (MEP) area of the right first dorsal interosseus (FDI) evoked by single- (circle) and paired-pulse TMS with 1 ms (diamond) and 2.5 ms (rectangle) interstimulus intervals (ISIs) at different test stimulation (TS) intensities. MEP areas were significantly suppressed in paired-pulse trials with 1 ms ISI at a TS of 140% or higher of the active motor threshold (AMT) and in paired-pulse trials with 2.5 ms ISI at a TS of 160 - 200% of the AMT as compared with the control trials (^*different from the control trials, p < 0.05). (B) Calculated short-interval intracortical inhibition (SICI, % of conditioned MEP area/test MEP area) at different TS intensities. SICI was significant in paired-pulse trials with 1 ms ISI at a TS of 140% or higher of the AMT and in paired-pulse trials with 2.5 ms ISI at a TS of 160 - 220% of the AMT (^*p < 0.05).