ISSN:
1432-1106
Keywords:
Key words H-reflex depression
;
Homosynaptic depression
;
Presynaptic inhibition
;
Spinal cord
;
Human
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract The H-reflex is depressed for seconds if elicited following a single H-reflex or train of H-reflexes. Presynaptic inhibition from flexor afferents (tibialis anterior) onto soleus Ia afferents elicited by either single or trains of stimuli had no effect on the soleus H-reflex on a time scale of seconds. Postsynaptic inhibition was also excluded by magnetic stimulation tests that showed that the excitability of the motoneuron pool was not changed at latencies within a range of seconds. Homosynaptic depression localized at the presynaptic terminal seems to be the mechanism behind the H-reflex depression in humans.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/PL00005765
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