1096 



Before starting this experiment in the first place I had to point 

 out, what was meant with cerebellar phenomena. 



The gait of the drunkard is, as I made clear in my former 

 reports, one of the most striking abnormalities in cerebellar disease. 

 Oppenheim on the other hand thought he distinguished still another form 

 of ataxia, which should have a great deal of similarity with spinal 

 ataxia, while Dkjkrine thinks under some instances a comparison 

 possible with labyrinthine ataxia. From this follows, that in man 

 no sharply defined disturbances are to be presented as cerebellar 

 symptoms. This can be easily comprehended because with sickly 

 alterations, as tumors of the cerebellum, other symptoms except the 

 local ones are observed. 



The pressure of the tumour will manifest itself also on other, far 

 located centra, by which the complex of symptoms, due to the local 

 disease, is no longer sharply delineated. 



I therefore soon came to the conclusion that 1 should not confine 

 myself in my further experiments to the symptoms of the sickbed, 

 but to the results which were obtained by animal investigations. 



Here too great care had to be taken, as in reference to the 

 numerous connections of the cerebellum with the other parts of the 

 central nervous system, only those investigations could be of any 

 use, in which exclusively small, well-described parts of the cerebellar 

 surface were taken away. 



In correlation of the view of Bolk *) I restricted myself in general 

 to the experiments of v. Runberk '), in addition to what was found 

 by others. 



Putting together in short the obtained results of v. Runberk, one 

 finds: I. ataxia (taken in general) II. ataxia of the head: "no"- 

 nodding; III. gait of the cock, in which the paws are strongly 

 pulled up in the knees. IV. the parade-step, as one sees with the 

 Prussian regiments, and in which the leg is lifted up being stretched 

 forward. Y. turning around the long-axis of the body. VI. pleuro- 

 tatonus or bending of the trunk towards the left or towards the right. 



If I add to these still one single symptom from my own experi- 



1) Cerebellar ataxia as disturbance of the equilibrium sensation. Verslag Kon. 

 Ak. V. Wet. Jan. 1918. 



-) BoLK, Principal features of the comparative anatomy of the cerebellum of the 

 mammals, particularly in correlation of the structure of tlie cerebellum in man. 

 Psych, en Neurolog. bl. 1"902. 



Bulk, On the physiological significance of the cerebellum. Haarlem. Erven Bohn. 

 ]903. 



*) G. V. RijNBEBK, On functional localisation in the cerebellum. Verb. Bataafsch 

 Gen. 1906. 



