MOTOR AREAS OF THE HUMAN BRAIN 



581 



monkey are discharged by the cortical centers may be subserved to a greater 

 extent by the basal ganglia. 



Motor Areas of the Human Brain. It is naturally of great impor- 

 tance to discover how far the results of experiments upon the dog and monkey 



FIG. 411. Motor Areas of the Human Brain, Lateral View. 



FIG. 412. Motor Areas of the Human Brain, Median View. 



hold good with regard to the human brain. Evidence furnished by diseased 

 conditions is not wanting to support the general idea of the existence of cortical 

 motor centers in the human brain, figure 411. 



So far, however, it has been possible to localize motor functions in the 

 precentral and ascending parietal convolutions only; the convolutions which 



