88 



LABORATORY OUTLINE OF NEUROLOGY 



Ingvar has restudied the question and reached somewhat dif- 

 ferent conclusions. The type of motor control exercised by 

 the cerebellum is evidently very different from that of the 

 motor centers of the cerebral cortex. The latter determines 

 what movement is to be made; the former appears to be con- 

 cerned only with the synergic control of the muscles whose 

 activity is called forth by other centers. 



S. preen. 



FIG. 16. The same section shown in Fig. 15 with the names of the 

 cerebellar fissures. Bolk's names are printed in full; others are abbre- 

 viated. Between the lingula and the lobulus centralis is the sulcus pre- 

 centralis (S.prcen.) of Symington. Above the lobulus centralis is the sulcus 

 postcentralis (S.pcen.) of Symington, or fissura preculminata of Elliot Smith. 

 The sulcus primarius of Bolk is the fissura prima of Elliot Smith and the 

 sulcus preclivalis of Symington. Above the declive is the sulcus postclivalis 

 (S.pcl.) of Symington. Between the folium and the tuber is the sulcus 

 horizontal's magnus (S.h.m.) of Symington. Between the tuber and the 

 pyramis is the sulcus postpyramidalis (S.ppy.) of Symington. Below the 

 pyramis is the fissura secunda of Bolk and Elliot Smith, or sulcus pre- 

 pyramidalis of Symington. Between the uvula and the nodulus is the sulcus 

 uvulo-nodularis of Bolk or sulcus postnodularis of Symington. For a 

 corresponding section of the cerebellum of the sheep, see Fig. 10. 



The nomenclature of the cerebellum is in great confusion, 

 each investigator having developed his own terminology. 

 In Figs. 13, 14, 15, and 16 the B N A names are indicated and 

 the names used by Bolk and some other more recent students 

 are given for comparison. 



On the structure, connections, and general functions of the 

 cerebellum consult especially the following works: Bailey 

 ('16), pp. 513-520; Cunningham ('15), pp. 570-581; Herrick 

 ('18), Chap. XII; Howell ('18), pp. 233-245; Johnston ('06), 

 Chap. XV; Luciani ('15); Quain ('09), pp. 67-202; Rauber- 

 Kopsch ('12), Schaefer ('00); Spalteholz ('09); Starling ('15), 



