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. Author manuscript; available in PMC: 2012 Apr 16.
Published in final edited form as: Spinal Cord. 2008 Jun 10;46(12):798–803. doi: 10.1038/sc.2008.49

Figure 2.

Figure 2

A. Representative H-reflex recordings of animals tested 7 days after Tx. The H-reflex was observed 8–10 ms after the stimulus. The H-reflex amplitudes at the different frequencies have been superimposed for comparison. The black line represents the H-reflex recorded at 0.2 Hz. The dark gray line represents recording at 5 Hz, and the light gray line represents recording at 10 Hz. Note the decrease in amplitude as frequency of stimulation was increased, indicative of low frequency-dependent depression present at 7 days posttransection. B. Representative H-reflex recording of animals tested 14 days after Tx. The H-reflex responses at the different frequencies have been superimposed for comparison. The black line represents H-reflex recorded at 0.2 Hz. The dark gray line represents recording at 5 Hz, and light gray line represents recording at 10 Hz. Note lack of decrement in amplitude as frequency of stimulation was increased, indicative of a decrease in frequency-dependent depression. The x-axis represents time in msec, the y-axis amplitude in mV.