Key result
Gastrocnemius medialis nerve stimulation induces two brief periods of soleus H reflex inhibition.
Why the study?
The study investigated whether Ia afferent fibres from the gastrocnemius medialis muscle inhibit the excitability of the soleus motor pool in humans.
Population
Humans
Comparison
Conditioned soleus H reflex with gastrocnemius medialis nerve stimulation vs unconditioned
Design
Experimental neurophysiological study using nerve stimulation and reflex measurement
Authors
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Ia inhibition from gastrocnemius to soleus supports reciprocal spinal control; leaves open functional relevance during locomotion.
Primary spindle afferent fibres from the gastrocnemius medialis muscle exert an inhibitory effect onto the soleus motor pool in humans.
Gritti et al. (1989) studied this question. Stimulation of the gastrocnemius medialis nerve vs. Unconditioned soleus H reflex was evaluated on Inhibition of the soleus H reflex. Stimulation of the gastrocnemius medialis nerve induced two short-lasting periods of inhibition in the soleus H reflex, peaking at about 0 and 5 ms of conditioning-test delay.
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