1905.] On Reciprocal Innervation of Antagonistic Muscles. 277 

Maes rie 4 dee 4 ad ' a t 1 1 4 1 y ieee 
Fie 3.—Myograph record of reflex contraction of extensor of knee interrupted by a reflex 
inhibition (relaxation). The reflex contraction was induced by stimulation (unipolar 
faradisation) of the skin of the opposite foot : this stimulation was applied during the 
time marked by the lower signal ; its movements of commencement and ending are 
marked by abscissze on the myogram. Towards the height of the reflex contraction 
a brief stimulation (unipolar faradisation) was applied to the skin of the foot 
homonymous with the knee extensor yielding the myogram: the duration of this 
inhibiting stimulus is marked by the upper signal. The knee extensor at outset was 
in some tonic contraction due to “decerebrate rigidity.” The reflex inhibition relaxes 
this in addition 1o inhibiting the current reflex from the crossed foot. Time is 
marked below in fifths of seconds. 
