86 LABORATORY OUTLINE OF NEUROLOGY 



each tract there represented between the thalamus and the 

 lower end of the spinal cord. The individual drawings may also 

 be filled in, if desired, by the addition of other details, and colored 

 (for color scheme see Section 62). 



In the accompanying List of Conduction Pathways the more 

 important tracts of the brain stem are arranged according to a 

 functional classification, and each neuron of a conduction path 

 is given a separate entry. The tracts of the prosencephalon 

 (thalamus and cerebral hemispheres) have not yet been studied; 

 but their names are entered in the List, printed in black-face 

 type, for future reference. 



Using this List as a basis, now prepare a Table of Conduction 

 Pathways which may be made up according to the pattern illus- 

 trated on page 89, where the first three entries of the List are 

 filled into the Table. The remaining items of the List should 

 also be entered in the Table, giving each entry of the List a 

 horizontal line in the Table. In the first column of the Table 

 in place of the name of the tract we have entered, for economy of 

 space, simply the numerical symbols of the tracts as given in 

 the List. 



Not all of the tracts here listed can be demonstrated either 

 by dissection or by the study of microscopic sections of the nor- 

 mal nervous system. Their courses have been demonstrated 

 by a combination of anatomical, physiological, and pathological 

 observations. The data for the Table will, accordingly, be 

 derived partly from your laboratory notes and partly from the 

 reference books. 



Spaces should be left in the Table for the prosencephalic 

 tracts printed in black face type in the List, and these are to be 

 filled in later in the course, after which the Table will present 

 a complete summary of all of the tracts studied. This will be 

 of value for the final review and correlation (Section 153). 

 The relations of the olfactory tracts are so complex that these 

 may be omitted from the Table and a special table or diagram 

 constructed for them (see Section 130) . 



This correlation of the anatomical data into functional 

 conduction systems is the most important part of the course 

 and should be done as thoroughly as possible and submitted 

 for examination at the close of the course, with the laboratory 



