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JOSEPH DUEKSON STOUT 



both sides. This is a very high percentage of bilateral activity 

 and can indicate either that the extra-motor areas are function- 

 ally in connection with the motor areas of both sides of the brain, 

 in other words are bilateral in their control, or that the mechan- 

 isms which are involved are so intimately bilateral that control 

 may be present in both sides of the cerebrum. The general 

 distribution of the stimulable extra-motor areas is given in 

 figure 62. 



TABLE 6 



Summary of movements obtained from extra-motor stimulations 



Figure 62 is a diagram presenting a record of the combined 

 results obtained from the stimulation of the extra-motor regions 

 of the cortices of cats 19, 20, 21, 24, 25, 26, and 27. The hemi- 

 sphere investigated in each case, except that of cat 19, was the 

 left, and since the results obtained from the investigation of 

 cat 19 were similar to the results from the other animals they 

 were included in the composite diagram of the left cortices of the 

 other animals for the purpose of simplification. The areas rep- 

 resented in this diagram indicate only the total extent of the 

 fields from which the various types of movement were initiated 



