Functions of the Cerebrum. 657 



The application of the electrodes to point 21, produced drawing back 

 of the head and opening of the mouth, with a feeble attempt at a cry 

 or growl (the animal being very much exhausted ). Repeated applica- 

 cations of the electrodes to this point and its neighborhood, caused 

 whining and growling noises ' ' like those which a dog makes in its sleep 

 and which are supposed to indicate that it is dreaming. " The location 

 of a number of other centers in the brain of the Dog is shown in fig. 359. 

 The description accompanying this figure sufficiently explains it. The 

 points made out are only those from which some sort of motor response 

 could be obtained, when the points were stimulated. 



We now come to compare these results with those assigned to mon- 

 keys and men. 



FIG. 360. Brain of Monkey 

 ( Macaque ) showing posi- 

 tion of convolutions, &c. 

 ( Ferrier.) 



1. Fissure of Sylvius. 



9. " " Rolando. 



13. Parieto Occipital 

 sure. 



F L Frontal Lobe. 



P L Parietal " 



O L Occipital " 



TS L Tempero, Sphenoid- 

 al Lobe. 



6. Superior Frontal Con- 

 volution, "r 



5. Middle Frontal Convol- 

 ution. 



3. Inferior Frontal Con- 

 volution. 



7. Superior Frontal Sul- 

 cus. 



4. Inferior Frontal Sulcus. 



2. Antero-parietal Sulcus. 



8. Ascending Frontal Convolution. 



TSL' 



FIG. 360. 



12. Postero-parietal Lobule. 

 A G. Angular Gyrus. 



10. " Parietal 



D 3 . Intra-parietal Sulcus. 



23, 22, 21. Superior, Middle and Inferior Tempero-Sphenoidal Convolutions. 



19, 20. Superior and Inferior Tempero-Sphenoidal Sulci. 



14, 16, 17. Superior, Middle and Inferior Occipital Convolutions. 



15, 18. First and Second Occipital Fissures. 



FIG. 361. Brain of Monkey 

 (Macaque ) showing position of 

 sensory and motor cortical cen- 

 ters. " 



Explanation for figures 361, 

 362, 363, 364. 



l.On Postero Parietal Lob- 

 ule; Center for such movements 

 of the leg and foot of the oppo- 

 site side as are concerned in lo- 

 comotion. 



2, 3, .-On Convolutions bound- 

 ing the upper extremity of the 

 fissure of Rolando; Centers for 

 various complex movements of 

 arms and legs, as in climbing, 

 swimming, &c. 



5. At the posterior end of the 

 superior frontal convolution at 

 its junction with the ascending 

 FIG. 361. frontal. Center for extension 



forwards of hand and arm as in putting forth the hand to touch something. 



6. On the ascending frontaljust behind the upper end of the posterior extremities of 

 middle frontal convolution. Center for hand and forearm particularly the biceps muscle 

 in flexion of forearm and the outward wave in supination. 



7 and 8. Centers for the elevator and depressor muscles, respectively, of the angle of 

 the mouth. 



