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contractions and relaxations alternate, or in other words the quick phase of the 
nystagmus does not disappear before the entire muscle is paralysed. 
After the total disappearance of the nystagmus the kymograph is stopped (at 
28 sec. past 12), and now after one or more minutes we ascertain whether 
recovery of the function is already discernible. As shown by the curve at 37 sec. 
past 12 new small minimal contractions recur. Every one of them is again followed 
directly by a quick relaxation. 
As stated above, five other quite successful experiments yielded 
the same result. 
CONCLUSIONS. 
BARTELS assumes in his theory that the rapid phase of the vestibular 
nystagmus is brought about by a reflex originating near the proprio- 
ceptive nerve-fibers and that the terminal branches of the trigeminus 
in the orbita play a part in this process. 
As the facts brought out in the present investigations have proved 
this not to be the case, his theory cannot be accepted. 
The place where the reflex for the quick phase of the nystagmus 
arises is therefore to be looked for more towards the centra in the 
brainstem. 
