«42 



difference between the ordinary atactive movements and tliose which 

 were indicated by him as "dysmetria". 



When one wishes to see these differences reprodnced distinctly 

 I refer to my photographs in my communication on "cerebellar 

 ataxia". Plate VlII, X to XIV '). 



In man, wliere the phenomenon cannot be localized as sure as 

 in animal-experiment, a conclusion is drawn with more difficulty. 

 Yet I will quote some writers, who showed that the deviations in 

 gait do not always give the same aspect. 



Jei.gersma (I.e. 1». 227) e.g. writes that the occurrence of the 

 cerebellar ataxia is due to the fad that the trunk sways over the 

 legs: "a gait, which greatly resembles the walking of drunken men." 



He only describes one lype of deviation of the gait. Oppenheim, 

 however, differentiates in his hand-book two forms of cerebellar 

 ataxia, 1. "auf (Sch windel und) Gleichgewichtsstörung beruhende, 

 "die grosse Aehnlichkeit mit dei- Gangweise des Hetrunkenen 

 "zeigt," and 2. "eine auf IJewegungsataxie beruhende, Patient 

 "geht breitbeinig und stampfend, aber ohne dass ein iibermassiges 

 "Schleudern einti-itt .... Eine scharfe Unterscheidung dieser Gehstörung 

 "von der spinalataktischen ist wohl uur m(iglich. wenn sich die unter' 

 "P' beschriebene Abart mit ihr verbindet." 



Oppenheim therefore thinks the cerebella ataxia e.g. also dependent 

 on the spinal cord. 



DÉGÉR1NE on the other hand writes in his work "Traite de Pathologie 

 générale" i90J, on page 643 "b. Ataxie labyriuthique. Les affections 

 "de l'oreille interne produisent quelquefois des troubles de la marche 

 "et de réquilibre, qui ressemblent jusqu'a un certain point aux 

 "disordres de l'ataxie cerebelleuse." Dégérine points out in this case 

 the connection of the cerebellar ataxia with the phenomena which 

 are found in vestibular disturbances. 



Now the question arises to interpret the difference in the atactic aspect. 



In my former communication I explained that even although the 

 equilibrium-impulses, originating from the vestibular organ may be 

 considered as to belong to the same which come from the spinal 

 cord, yet there exists a great difference in their results, owing to 

 the higher development of that organ. 



The consequence of this is, that according to the afferent equilibrium 

 path suffering more in the one case than in the other, the complex 

 of atactic symptoms will also appear differently. 



If the spinal tracts have suffered most, then the type as described 



1) Psych. Neur. Bl. 1909 N^. 4. 



