D1 and D2 Inhibitions of the Soleus H-Reflex Are Differentially Modulated during Plantarflexion Force and Position Tasks
Fig 5
Heteronymous Ia facilitation from the quadriceps muscle on soleus H-reflex.
(A) Representative data for one subject, showing raw EMG recordings with control H-reflexes (CTRL, left panels) and H-reflexes under heteronymous Ia facilitation (FACL, right panels), for both force task (upper panels) and position task (lower panels). Single reflexes are drawn in light gray (superimposed sweeps) and the averaged waves are drawn in thicker black lines. (B) Averaged H-reflex amplitudes (normalized by the mean amplitude of the control H-reflexes) computed for control (CTRL) and heteronymous Ia facilitation (FACL) conditions, for each subject. Note the larger heteronymous facilitation during PT than during FT.