1905.| On Reciprocal Innervation of Antagonistic Muscles. 281 
III. Faradisation of the cutaneous nerves of the limb generally depresses 
the knee-jerk, as was first shown experimentally by Sternberg.* That that 
influence can be exerted by these nerves has recently been laid stress on by 
R. du Bois Reymond. I have noted their similar effect on the tonus. 
Inhibition of the tonus of the extensor muscles has also been shownt to be 

Fie. 7.—Myogram of convulsive twitching of semtendinosus in a “spinal” dog. The 
spasms are reduced and temporarily suspended by stimulation (faradisation) of the 
proximal end of a branch of the internal saphenous nerve of the contralateral leg. 
The time of application of the inhibiting stimulus is shown on the signal line below. 
Time is marked above in seconds. 
obtainable from other afferent nerves besides the hamstring nerve, and notably 
from skin nerves of the homonymous hind limb itself. If with stimulation 
of one of these nerves stimulation of the hamstring nerve is combiued, the 
stimulation of the latter is found to reinforce the inhibitory effect of the 
* “Sehnenreflexe,” Vienna, 1893; ‘ Roy. Soc. Proc.,’ vol. 60, 1896. 
+ Sherrington, ‘ Roy. Soc. Proc.,’ vol. 60, 1896. 
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