260 



iK When sitting, head flexed and with maximum rotation to the left, 



marked rolling movements, strong spontaneous nystagmus. 



8/7 1921 : Tonic reflex entirely lacking. Yesterday's asymmetry quite disappeared. 



9/7 1921 : Animal dyspnoeic Decerebrate rigidity not good. 

 Tonic labyrinth reflexes decidedly not present. 



Cavia F. 



28/5 1921 : All labyrinth-reflexes positive. 



Genlrifuged with head up, chest inward, time 2 minutes, rate 1000 

 m. per minute. 

 31/5 1921: Semicircular canal reflexes: Rotation-reactions and after-reactions: 

 positive. 



Progression-reactions: lift-reaction positive, the others weak. 

 Tonic reflexes: lacking. 

 2/6 1921: Reflexes of semicircular canal: all positive. Tonic reflexes: lacking, 

 oh 12'. 0,05 cc. 10% cocain through left tympanum. 

 6 hour. Sitting with head placed in the normal position : D upward, S 



downward (incipient paralysis of left labyrinth). 

 6*1 21. Sitting with head turned a little towards the left, the whole animal 



inclines to the left. 



Hanging with head down: "Grunddrehung" 90° to the left. 

 6h 6'. Rotating with head inward, rotating to the left, weak rotation-reaction 



of the head, distinct after-reaction Dextro-rotation : marked rotation- 

 reaction of the head and no after reaction. 

 6*1 7'. Eye-rotation reactions : dextro rotation, distinct reaction with nystagmus, 



no after-reaction. With levo-rotation : reaction and afterreaction. 

 6^ 10'. Progression-reaction: Liftreaction not distinct. 

 "Springing reflex" positive. 



Muscular tremor: positive in all directions except posteriorly. 

 Tonic labyrinth-reflexes negative. 

 Position of the head in the air with : 



Right lateral position : head in normal position 

 to the trunk through "Grunddrehung", often 

 hangs down. 



Left lateral position: head in dorsal position 

 through "Grunddrehung". 



Head up : head in left lateral position, animal 

 now becomes restless (cocainaction). 

 Head down: head turns 90° to the left. 

 Dorsal position: head in right lateral position 

 through levorotation, often also in dorsal position 

 with left flexion. 



6h 18'. When sitting with head placed in the normal position: OD anteriorly 

 upward, S posteriorly downward. Nystagmus just Ihe opposite way. 

 6h 33'. Right lateral position : S posteriorly downward, nystagmus the 

 opposite way. Eye-deviation and nystagmus of the left eye are the 

 same with right and left lateral position of the head and equally 

 strong; the same holds good also for D. 



Ergo constant 

 rotation of the 

 head, which does 

 not change with 

 change of position 

 of the head in space. 



