H reflex
Also found in: Dictionary, Thesaurus, Encyclopedia.
H re·flex
a monosynaptic reflex consistently obtained in normal adults only by electrically stimulating the tibial nerve, generally in the popliteal fossa, while recording from the gastrocnemius-soleus muscle group; similar to the clinically elicited Achilles reflex, except that the neuromuscular spindles are bypassed. Widely used in the EMG laboratory to diagnose S1 radiculopathies and polyneuropathies.
Farlex Partner Medical Dictionary © Farlex 2012
H reflex
[after Johann Hoffmann, who described it in 1918] See: reflexH reflex
In electrodiagnostic studies of spinal reflexes, the time required for a stimulus applied to a sensory nerve to travel to the spinal cord and return down the motor nerve.
See: F responseSee also: reflex
Medical Dictionary, © 2009 Farlex and Partners