Fig. 1. The control H-reflex (black line) is adjusted to 50% of H_max.

The conditioned H-reflex (gray line) is expressed as suppression of the soleus H-reflex with conditioning stimulus. Depicted waveforms are superimposed (thin line) and average (bold line) waves of 10 sweeps for each of the reflexes.

H-reflex, Hoffmann’s reflex; H_max, maximum H-reflex