* 



MOTOR FUNCTIONS OF CEREBRAL CORTEX OF CAT 193 



fissure. Cat 9 (fig. 10), posterior to the crucial sulcus and ex- 

 tending from the median line opposite the anterior end of the 

 fissura lateralis to a line half way between the outer end of the 

 crucial sulcus and the posterior end of the coronal fissure. Cat 

 10 (fig. 11), a large field extending from the anterior end of the 

 lateral fissure to the anterior end of the coronal fissure and 

 from the median line to a line slightly external to the outer end 

 of the crucial sulcus. Cat 12 (fig. 12), an area restricted to the 

 bank of the crucial sulcus. On the left cortices the localizations 

 are as folloWs: Cat 10 (fig. 13), a large area extending from the 

 anterior angle of the lateral fissure to a line half way from the 

 crucial sulcus to the olfactory lobe, and occupying the middle 

 two-thirds of the area between the median line and the coronal 

 fissure. Cat 11 (fig. 14), an area similar! ocated to that of 

 cat 10. Cat 14 (fig. 15), from the anterior angle of the lateral 

 fissure to a line 0.5 cm. above the olfactory lobe and from a line 

 slightly external to the median line to a line continued forward 

 from the body of the lateral fissure. 



The fields for the trunk and tail may be said in a general way 

 to occupy scattered areas mainly posterior to the crucial sulcus, 

 but there is considerable variation in the different animals. The 

 localizations in the individual animals, on the right side, are as 

 follows: Cat 8 (fig. 9), an area posterior to the outer end of the 

 crucial sulcus and extending almost to the middle of the coronal 

 fissure. Cat 9 (fig. 10), two small areas, one immediately poste- 

 rior to the inner end of the crucial sulcus and the other extending 

 from the median line outward to the anterior end of the lateral 

 fissure. Cat 10 (fig. 11), a small area immediately anterior % to the 

 outer end of the crucial sulcus. On the left side, the localiza- 

 tions are as follows: Cat 10 (fig. 13), none. Cat 11 (fig. 14), 

 a narrow zone /extending from the median line outward to a line 

 drawn forward in continuation of the body of the lateral fissure 

 and lying half way between the anterior portion of the lateral 

 fissure and the crucial sulcus. Cat 14 (fig. 15), two small areas, 

 one immediately anterior to the outer end of the crucial sulcus 

 and the other midway between the anterior portion of the lateral 

 fissure and the outer half of the crucial sulcus. 



PSYCHO BIOLOGY, VOL. I. NO. 3 



