[A study of the interaction between the peripheral motor neurons of muscle antagonists by the H-reflex method under normal conditions and in spastic hemiparesis].
With the aid of the reflex method the authors studied the functional condition and interconnection of peripheral motoneurons of the muscles-antogonists in normal conditions and in spastic hemiparesis. In patients with spastic hemiparesis there was an increase in the inhibition latent period of the H-reflex following a conditioning stimula of the fibular nerve and a nonmonotonous restitution in the amplitude of the H-reflex during the periods of "late inhibition". These data permit to assume that in patients with pyramidal insufficiency the changes in the system of reciprocal inhibitive interaction of muscles-antagonists are fixed and are not subjected to a supraspinal control. This may determine the spastic character of the muscle tone in such patients.
D000293:Adolescent; D000328:Adult; D006181:H-Reflex; D006429:Hemiplegia / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged; D009046:Motor Neurons; D009128:Muscle Spasticity / Q000209:etiology / Q000503:physiopathology*; D011930:Reaction Time; D012021:Reflex, Abnormal; D012023:Reflex, Monosynaptic
Izuchenie vzaimodeĭstviia perifericheskikh motoneĭronov myshts-antagonistov metodom H-refleksa v norme i pri spasticheskom gemipareze