MOTOR FUNCTIONS OF CEREBRAL CORTEX OF CAT 



199 



1.79 per stimulation; cat 10, 72, or 1.85 per stimulation; cat 12, 

 69, or 1.64 per stimulation; left oat 10, 42, or 1.36 per stimu- 

 lation; cat 11, 173, or 1.75 per stimulation; cat 14, 280, or 2.14 

 per stimulation; cat 15, 102, or 1.96 per stimulation. Summariz- 

 ing, there were from the right cortices a total of 154 successful 

 stimulations and a total of 306 movements, or an average of 

 1.99 movements per stimulation, and from all left cortices a 

 total of 397 successful stimulations and a total of 597 move- 

 ments, or an average of 1.91 movements per stimulation. Com- 

 bining the figures for the two sides, there were a total of 467 

 stimulations with a total of 903 movements, or an average of 



TABLE 2 



Analysis of the motor results from the stimulation of the cortices of cats 8, 9, 10, 11, 



12, 14 and 15 



1.95 movements per stimulation. This indicates the com- 

 plexity of the cortical motor relations, but shows an approxi- 

 mate similarity in the complexity of results for. both hemi- 

 spheres. Referring to the results for the individual animals, it 

 is seen that the relation of movement to stimulation, as shown, 

 by the figures for the average number of simple movements fol- 

 lowing the various stimulations, is subject to considerable varia- 

 tion in the different individuals. The only animal presenting re- 

 sults from two hemispheres is cat 10. A marked variation is found 

 in the results from the two sides of this, brain, for while the right 

 gave an average of 1.85 movements per stimulation, the left gave 

 an average of only 1.36 movements per stimulation. 



For further analysis we may consider the movements of flexion 



