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. 2014 Jul 2;34(27):8976–8987. doi: 10.1523/JNEUROSCI.0678-14.2014

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Copyright © 2014 the authors 0270-6474/14/348976-12$15.00/0

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Figure 1. — Spinal excitability gradually increases after SCI. A, FDD gradually decreases over time, reaching a plateau ∼28 d after SCI. Shown are significant differences at 5 Hz (intact and SCI-7d vs SCI-14d, SCI-28d, and SCI-56d; SCI-14d vs SCI-28d and SCI-56d) and at 10 Hz (intact and SCI-7d vs SCI-28d and SCI-56d; SCI-14d vs SCI-28d and SCI-56d). The enlarged recordings depict representative averages of H-reflex recordings after a train of stimulation at 0.3 Hz (light gray), 5 Hz (dark gray) and 10 Hz (black) when the FDD is impaired (top) or not (bottom). B, H_max/M_max ratio gradually increases with time after SCI and also plateaus at ∼28 d.