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. 2009 Sep 1;587(Pt 20):4845–4862. doi: 10.1113/jphysiol.2009.179101

Figure 4. Effects of QPS-50 ms priming over SMA on QPS-induced plasticity.

Figure 4

Time courses of MEP amplitude following QPS at various ISIs with (▾) and without (^) QPS-50 ms priming over SMA (mean ±s.e.m.). A, SMA priming occluded subsequent LTP-like plasticity induced by QPS-5 ms. B, priming did not change plasticity induced by QPS-10 ms. C, priming reversed suppression of MEP by QPS-30 ms. D, MEP suppression induced by QPS-100 ms was not altered with SMA priming. Asterisks denote significant difference of MEP sizes with priming from those without priming at each time point (P < 0.05 by post hoc paired t tests).